diff --git a/NEXT_RELEASE_NOTES.md b/NEXT_RELEASE_NOTES.md
index 31520ba97c..c694aacb88 100644
--- a/NEXT_RELEASE_NOTES.md
+++ b/NEXT_RELEASE_NOTES.md
@@ -39,6 +39,7 @@ The release notes should contain at least the following sections:
 
 * For any uss_qualifier test configurations using any of the test suites `suites.astm.utm.f3548_21`, `suites.faa.uft.message_signing`, `suites.uspace.flight_auth`, or `suites.uspace.required_services`, the following resources must be changed:
     * A new required resource named `conflicting_flights_provider` must be provided.  It must be a `resources.resource.ResourceProvidingResource` providing `resources.flight_planning.FlightIntentsResource` instances with spatially separated flight intents for each planner combination used by `ConflictEqualPriorityNotPermitted`.  One suitable implementation is `resources.geospatial.TriangularCascadeSoutheastResource` with `conflicting_flights` as its `base_resource`; see [f3548_self_contained](./monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml) for an example.
+    * A new required resource named `planning_area_provider` must be provided to replace `planning_area`.  It must be a `resources.resource.ResourceProvidingResource` providing `resources.planning_area.PlanningAreaResource` instances with spatially separated planning areas for each DSS instance used in the `dss_probing` test suite.  One suitable implementation is `resources.geospatial.TriangularCascadeSoutheastResource` with `planning_area` as its `base_resource`; see [f3548_self_contained](./monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml) for an example.  The existing `planning_area` suite input is no longer used except by `suites.uspace.required_services`, which still requires it for NetRID tests.  Keep any underlying planning area resource used as the provider's `base_resource`.
 
 ## Optional migration tasks
 
diff --git a/monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml b/monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml
index 55ada1fe85..83344ed5d1 100644
--- a/monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml
+++ b/monitoring/uss_qualifier/configurations/dev/f3548_self_contained.yaml
@@ -29,7 +29,7 @@ v1:
           mock_uss: mock_uss
           utm_auth: utm_auth
           second_utm_auth: second_utm_auth
-          planning_area: planning_area
+          planning_area_provider: planning_area_provider
           problematically_big_area: problematically_big_area
 
     # When a test run is executed, a "baseline signature" is computed uniquely identifying the "baseline" of the test,
@@ -219,6 +219,15 @@ v1:
           specification:
             base_url: https://testdummy.interuss.org/interuss/monitoring/uss_qualifier/configurations/dev/f3548_self_contained/planning_area
 
+        # Provide variants of the planning_area base resource by shifting them geographically
+        planning_area_provider:
+          resource_type: resources.geospatial.TriangularCascadeSoutheastResource
+          dependencies:
+            base_resource: planning_area
+          specification:
+            meters_east_margin: 10000
+            meters_north_margin: 10000
+
         # An area designed to be soo big as to be refused by systems queries with it.
         problematically_big_area:
           $content_schema: monitoring/uss_qualifier/resources/definitions/ResourceDeclaration.json
@@ -298,6 +307,16 @@ v1:
 
       # Allow certain actions to execute their sub-actions in parallel.
       parallelism_rules:
+        # The DSS probing generator (action 3 in f3548_21) isn't ready to run its actions in parallel yet
+        - max_parallelism: 1
+          conditions:
+            - is_action_generator:
+                types:
+                  - action_generators.resource_environments.ResourceEnvironmentsActionGenerator
+              defined_at:
+                # TODO: add ability to condition on potential actions
+                - test_suite.actions[3].action_generator
+        # ...but other ResourceEnvironmentsActionGenerators can have their actions run in parallel
         - max_parallelism: 2
           conditions:
             - is_action_generator:
diff --git a/monitoring/uss_qualifier/configurations/dev/library/resources.yaml b/monitoring/uss_qualifier/configurations/dev/library/resources.yaml
index 37ff530059..dfed009280 100644
--- a/monitoring/uss_qualifier/configurations/dev/library/resources.yaml
+++ b/monitoring/uss_qualifier/configurations/dev/library/resources.yaml
@@ -212,6 +212,15 @@ zurich_planning_area:
   specification:
     base_url: https://testdummy.interuss.org/interuss/monitoring/uss_qualifier/configurations/dev/library/resources/zurich_planning_area
 
+zurich_planning_area_provider:
+  $content_schema: monitoring/uss_qualifier/resources/definitions/ResourceDeclaration.json
+  resource_type: resources.geospatial.TriangularCascadeSoutheastResource
+  dependencies:
+    base_resource: zurich_planning_area
+  specification:
+    meters_east_margin: 10000
+    meters_north_margin: 10000
+
 zurich_problematically_big_area: # A huge (as in "too big") area for checks around area sizes
   $content_schema: monitoring/uss_qualifier/resources/definitions/ResourceDeclaration.json
   resource_type: resources.VolumeResource
@@ -316,6 +325,15 @@ che_planning_area:
   specification:
     base_url: https://testdummy.interuss.org/interuss/monitoring/uss_qualifier/configurations/dev/library/resources/che_planning_area
 
+che_planning_area_provider:
+  $content_schema: monitoring/uss_qualifier/resources/definitions/ResourceDeclaration.json
+  resource_type: resources.geospatial.TriangularCascadeSoutheastResource
+  dependencies:
+    base_resource: che_planning_area
+  specification:
+    meters_east_margin: 10000
+    meters_north_margin: 10000
+
 che_problematically_big_area:
   resource_type: resources.VolumeResource
   specification:
diff --git a/monitoring/uss_qualifier/configurations/dev/message_signing.yaml b/monitoring/uss_qualifier/configurations/dev/message_signing.yaml
index 57ca9b2b5e..728b3a4f12 100644
--- a/monitoring/uss_qualifier/configurations/dev/message_signing.yaml
+++ b/monitoring/uss_qualifier/configurations/dev/message_signing.yaml
@@ -9,6 +9,7 @@ v1:
         che_problematically_big_area: {$ref: 'library/resources.yaml#/che_problematically_big_area'}
         che_planning_area_volume: {$ref: 'library/resources.yaml#/che_planning_area_volume'}
         che_planning_area: {$ref: 'library/resources.yaml#/che_planning_area'}
+        che_planning_area_provider: {$ref: 'library/resources.yaml#/che_planning_area_provider'}
         combination_selector:
           resource_type: resources.flight_planning.FlightPlannerCombinationSelectorResource
           specification:
@@ -61,7 +62,7 @@ v1:
           id_generator: id_generator
           utm_client_identity: utm_client_identity
           second_utm_auth: second_utm_auth
-          planning_area: che_planning_area
+          planning_area_provider: che_planning_area_provider
           problematically_big_area: che_problematically_big_area
           test_exclusions: test_exclusions
     execution:
diff --git a/monitoring/uss_qualifier/configurations/dev/uspace.yaml b/monitoring/uss_qualifier/configurations/dev/uspace.yaml
index 73bcc2dc27..d6b02b9643 100644
--- a/monitoring/uss_qualifier/configurations/dev/uspace.yaml
+++ b/monitoring/uss_qualifier/configurations/dev/uspace.yaml
@@ -18,6 +18,7 @@ v1:
         zurich_service_area: {$ref: 'library/resources.yaml#/zurich_service_area'}
         zurich_planning_area_volume: {$ref: 'library/resources.yaml#/zurich_planning_area_volume'}
         zurich_planning_area: {$ref: 'library/resources.yaml#/zurich_planning_area'}
+        zurich_planning_area_provider: {$ref: 'library/resources.yaml#/zurich_planning_area_provider'}
         zurich_problematically_big_area: {$ref: 'library/resources.yaml#/zurich_problematically_big_area'}
         zurich_flights_data: {$ref: 'library/resources.yaml#/zurich_flights_data'}
         utm_auth: {$ref: 'library/environment.yaml#/utm_auth'}
@@ -82,6 +83,7 @@ v1:
           id_generator: id_generator
           service_area: zurich_service_area
           planning_area: zurich_planning_area
+          planning_area_provider: zurich_planning_area_provider
           problematically_big_area: zurich_problematically_big_area
 
           test_exclusions: test_exclusions
@@ -119,6 +121,7 @@ v1:
                 id_generator: id_generator
                 service_area: service_area
                 planning_area: planning_area
+                planning_area_provider: planning_area_provider
                 problematically_big_area: problematically_big_area
 
                 test_exclusions: test_exclusions
diff --git a/monitoring/uss_qualifier/configurations/dev/utm_implementation_us/definitions/baseline_a.libsonnet b/monitoring/uss_qualifier/configurations/dev/utm_implementation_us/definitions/baseline_a.libsonnet
index c537e4071c..46ead55cb6 100644
--- a/monitoring/uss_qualifier/configurations/dev/utm_implementation_us/definitions/baseline_a.libsonnet
+++ b/monitoring/uss_qualifier/configurations/dev/utm_implementation_us/definitions/baseline_a.libsonnet
@@ -32,7 +32,7 @@ function(env) {
             mock_uss: 'mock_uss',
             utm_auth: 'utm_auth',
             second_utm_auth: 'second_utm_auth',
-            planning_area: 'planning_area',
+            planning_area_provider: 'planning_area_provider',
             problematically_big_area: 'problematically_big_area',
             system_identity: 'system_identity',
             // dss_datastore_cluster: dss_datastore_cluster  # TODO: Provide once local DSS uses a multi-node cluster
@@ -153,6 +153,18 @@ function(env) {
             },
           },
 
+          // Provide variants of the planning_area base resource by shifting them geographically
+          planning_area_provider: {
+            resource_type: 'resources.geospatial.TriangularCascadeSoutheastResource',
+            dependencies: {
+              base_resource: 'planning_area',
+            },
+            specification: {
+              meters_east_margin: 10000,
+              meters_north_margin: 10000,
+            },
+          },
+
           // An area designed to be soo big as to be refused by systems queries with it.
           problematically_big_area: {
             resource_type: 'resources.VolumeResource',
diff --git a/monitoring/uss_qualifier/resources/astm/f3548/v21/dss.py b/monitoring/uss_qualifier/resources/astm/f3548/v21/dss.py
index 484d198fed..864fdec533 100644
--- a/monitoring/uss_qualifier/resources/astm/f3548/v21/dss.py
+++ b/monitoring/uss_qualifier/resources/astm/f3548/v21/dss.py
@@ -53,6 +53,7 @@
 from monitoring.monitorlib.mutate.scd import MutatedSubscription
 from monitoring.uss_qualifier.resources.astm.dss import NotificationIndexImplementation
 from monitoring.uss_qualifier.resources.communications import AuthAdapterResource
+from monitoring.uss_qualifier.resources.plural import PluralResource
 from monitoring.uss_qualifier.resources.resource import Resource
 
 
@@ -817,7 +818,9 @@ class DSSInstancesSpecification(ImplicitDict):
     dss_instances: list[DSSInstanceSpecification]
 
 
-class DSSInstancesResource(Resource[DSSInstancesSpecification]):
+class DSSInstancesResource(
+    PluralResource[DSSInstanceResource], Resource[DSSInstancesSpecification]
+):
     dss_instances: list[DSSInstanceResource]
 
     def __init__(
@@ -835,3 +838,9 @@ def __init__(
             )
             for i, s in enumerate(specification.dss_instances)
         ]
+
+    def get_resource_instances_count(self) -> int:
+        return len(self.dss_instances)
+
+    def get_resource_instance(self, index: int) -> DSSInstanceResource:
+        return self.dss_instances[index]
diff --git a/monitoring/uss_qualifier/resources/combinations.py b/monitoring/uss_qualifier/resources/combinations.py
index c5c60ccb77..a809677893 100644
--- a/monitoring/uss_qualifier/resources/combinations.py
+++ b/monitoring/uss_qualifier/resources/combinations.py
@@ -33,6 +33,9 @@ class ResourceCombinationsResource(
     For example, with a pre-existing dependent `flight_planners` FlightPlannersResource, a
     ResourceCombinationsResource(tested_uss=flight_planners, control_uss=flight_planners) will produce each combination
     of tested_uss=FP1, control_uss=FP2 for all FP1, FP2 combinations in flight_planners.
+
+    A single dependent PluralResource enumerates its instances under the assigned resource ID.
+    If any dependent PluralResource is empty, no combinations are produced.
     """
 
     _resource_sources: dict[ResourceID, PluralResource]
@@ -53,13 +56,16 @@ def __init__(
                 raise ValueError(
                     f"Dependent resources for ResourceCombinationsResource must be PluralResources; dependent resource '{k}' was instead a {fullname(v.__class__)}"
                 )
-            if v.get_resource_instances_count() == 0:
-                # Can't fill this role because there are no resources to fill it with.
-                continue
             self._resource_sources[ResourceID(k)] = v
 
     def get_environments(self) -> Iterator[dict[ResourceID, Resource]]:
         """Get the combinations of resources fulfilling each specified role."""
+        if any(
+            resource.get_resource_instances_count() == 0
+            for resource in self._resource_sources.values()
+        ):
+            return
+
         roles = [
             _RoleCombination(role=k, resources=v, index=0)
             for k, v in self._resource_sources.items()
diff --git a/monitoring/uss_qualifier/resources/planning_area.py b/monitoring/uss_qualifier/resources/planning_area.py
index fd486c0d14..eba04c2e54 100644
--- a/monitoring/uss_qualifier/resources/planning_area.py
+++ b/monitoring/uss_qualifier/resources/planning_area.py
@@ -1,4 +1,5 @@
 import datetime
+from copy import deepcopy
 
 from implicitdict import ImplicitDict, Optional
 from uas_standards.astm.f3548.v21.api import (
@@ -11,11 +12,17 @@
     UssBaseURL,
 )
 
-from monitoring.monitorlib.geo import make_latlng_rect
+from monitoring.monitorlib.geo import (
+    LatLngBoundingBox,
+    RelativeTranslation,
+    Transformation,
+    make_latlng_rect,
+)
 from monitoring.monitorlib.geotemporal import Volume4D
 from monitoring.monitorlib.subscription_params import SubscriptionParams
 from monitoring.monitorlib.temporal import TestTimeContext, Time
 from monitoring.monitorlib.testing import make_fake_url
+from monitoring.uss_qualifier.resources.geospatial import GeospatialResource
 from monitoring.uss_qualifier.resources.resource import Resource
 from monitoring.uss_qualifier.resources.volume import VolumeResource
 
@@ -42,7 +49,7 @@ def get_base_url(self, frames_above: int = 1):
         return make_fake_url(frames_above=frames_above + 1)
 
 
-class PlanningAreaResource(Resource[PlanningAreaSpecification]):
+class PlanningAreaResource(GeospatialResource, Resource[PlanningAreaSpecification]):
     specification: PlanningAreaSpecification
     _volume: VolumeResource
 
@@ -56,6 +63,29 @@ def __init__(
         self.specification = specification
         self._volume = volume
 
+    def get_extents(self) -> LatLngBoundingBox:
+        return LatLngBoundingBox.from_latlng_rect(
+            self.resolved_volume4d_with_times(None, None).rect_bounds
+        )
+
+    def move(self, meters_east: float, meters_north: float) -> "PlanningAreaResource":
+        volume_spec = deepcopy(self._volume.specification)
+        volume_spec.template.transformations = (
+            volume_spec.template.transformations or []
+        ) + [
+            Transformation(
+                relative_translation=RelativeTranslation(
+                    meters_east=meters_east,
+                    meters_north=meters_north,
+                )
+            )
+        ]
+        return PlanningAreaResource(
+            specification=deepcopy(self.specification),
+            resource_origin=self.resource_origin,
+            volume=VolumeResource(volume_spec, self._volume.resource_origin),
+        )
+
     def resolved_volume4d(self, context: TestTimeContext) -> Volume4D:
         return self._volume.specification.template.resolve(context)
 
diff --git a/monitoring/uss_qualifier/suites/astm/utm/f3548_21.md b/monitoring/uss_qualifier/suites/astm/utm/f3548_21.md
index 239119a9dc..fddc07c0f9 100644
--- a/monitoring/uss_qualifier/suites/astm/utm/f3548_21.md
+++ b/monitoring/uss_qualifier/suites/astm/utm/f3548_21.md
@@ -7,7 +7,7 @@
 1. Scenario: [Get system versions](../../../scenarios/versioning/get_system_versions.md) ([`scenarios.versioning.GetSystemVersions`](../../../scenarios/versioning/get_system_versions.py))
 2. Scenario: [DSS pool information](../../../scenarios/astm/utm/dss/pool_info.md) ([`scenarios.astm.utm.dss.pool_info.PoolInfo`](../../../scenarios/astm/utm/dss/pool_info.py))
 3. Scenario: [ASTM F3548 flight planners preparation](../../../scenarios/astm/utm/prep_planners.md) ([`scenarios.astm.utm.PrepareFlightPlanners`](../../../scenarios/astm/utm/prep_planners.py))
-4. Action generator: [`action_generators.astm.f3548.ForEachDSS`](../../../action_generators/astm/f3548/for_each_dss.py)
+4. Action generator: [`action_generators.resource_environments.ResourceEnvironmentsActionGenerator`](../../../action_generators/resource_environments.py)
     1. Suite: [DSS testing for ASTM F3548-21](dss_probing.md) ([`suites.astm.utm.dss_probing`](dss_probing.yaml))
 5. Action generator: [`action_generators.flight_planning.FlightPlannerCombinations`](../../../action_generators/flight_planning/planner_combinations.py)
     1. Scenario: [Validation of operational intents](../../../scenarios/astm/utm/flight_intent_validation/flight_intent_validation.md) ([`scenarios.astm.utm.FlightIntentValidation`](../../../scenarios/astm/utm/flight_intent_validation/flight_intent_validation.py))
diff --git a/monitoring/uss_qualifier/suites/astm/utm/f3548_21.yaml b/monitoring/uss_qualifier/suites/astm/utm/f3548_21.yaml
index 114ec4a0d4..b3141e7692 100644
--- a/monitoring/uss_qualifier/suites/astm/utm/f3548_21.yaml
+++ b/monitoring/uss_qualifier/suites/astm/utm/f3548_21.yaml
@@ -25,7 +25,7 @@ resources:
   utm_client_identity: resources.communications.ClientIdentityResource
   mock_uss: resources.interuss.mock_uss.client.MockUSSResource?
   id_generator: resources.interuss.IDGeneratorResource
-  planning_area: resources.PlanningAreaResource
+  planning_area_provider: resources.resource.ResourceProvidingResource[resources.planning_area.PlanningAreaResource]
   problematically_big_area: resources.VolumeResource
   system_identity: resources.versioning.SystemIdentityResource?
   test_exclusions: resources.dev.TestExclusionsResource?
@@ -40,6 +40,18 @@ local_resources:
     resource_type: resources.versioning.SystemIdentityResource
     specification:
       system_identity: astm.f3548.v21
+  dss_environments:
+    resource_type: resources.combinations.ResourceCombinationsResource
+    dependencies:
+      dss: dss_instances?
+    specification: {}
+  dss_probing_environments:
+    resource_type: resources.environments.EnvironmentAugmentationResource
+    dependencies:
+      environments: dss_environments
+      planning_area: planning_area_provider
+      # TODO: populate flight_intents from non_conflicting_flights_provider
+    specification: {}
   priority_preemption_combinations:
     resource_type: resources.combinations.ResourceCombinationsResource
     dependencies:
@@ -92,18 +104,19 @@ actions:
       flight_intents2: non_conflicting_flights?
       flight_intents_environments: flight_intents_environments?
 - action_generator:
-    generator_type: action_generators.astm.f3548.ForEachDSS
+    generator_type: action_generators.resource_environments.ResourceEnvironmentsActionGenerator
     resources:
+      dss_probing_environments: dss_probing_environments
       dss_instances: dss_instances
       dss_datastore_cluster: dss_datastore_cluster?
       second_utm_auth: second_utm_auth?
       utm_client_identity: utm_client_identity
       flight_intents: non_conflicting_flights
       id_generator: id_generator
-      planning_area: planning_area
       problematically_big_area: problematically_big_area
       test_exclusions: test_exclusions?
     specification:
+      resource_environments_source: dss_probing_environments
       action_to_repeat:
         test_suite:
           suite_type: suites.astm.utm.dss_probing
@@ -118,8 +131,6 @@ actions:
             planning_area: planning_area
             problematically_big_area: problematically_big_area
             test_exclusions: test_exclusions?
-      dss_instances_source: dss_instances
-      dss_instance_id: dss
 - action_generator:
     generator_type: action_generators.flight_planning.FlightPlannerCombinations
     resources:
diff --git a/monitoring/uss_qualifier/suites/faa/uft/message_signing.yaml b/monitoring/uss_qualifier/suites/faa/uft/message_signing.yaml
index 189e29f8d8..345bf0288d 100644
--- a/monitoring/uss_qualifier/suites/faa/uft/message_signing.yaml
+++ b/monitoring/uss_qualifier/suites/faa/uft/message_signing.yaml
@@ -20,7 +20,7 @@ resources:
   id_generator: resources.interuss.IDGeneratorResource
   utm_client_identity: resources.communications.ClientIdentityResource
   second_utm_auth: resources.communications.AuthAdapterResource?
-  planning_area: resources.PlanningAreaResource
+  planning_area_provider: resources.resource.ResourceProvidingResource[resources.planning_area.PlanningAreaResource]
   problematically_big_area: resources.VolumeResource
   test_exclusions: resources.dev.TestExclusionsResource?
 actions:
@@ -47,7 +47,7 @@ actions:
       id_generator: id_generator
       utm_client_identity: utm_client_identity
       second_utm_auth: second_utm_auth
-      planning_area: planning_area
+      planning_area_provider: planning_area_provider
       problematically_big_area: problematically_big_area
       test_exclusions: test_exclusions?
 - test_scenario:
diff --git a/monitoring/uss_qualifier/suites/uspace/flight_auth.yaml b/monitoring/uss_qualifier/suites/uspace/flight_auth.yaml
index 2e5916cdc9..bf78a6739d 100644
--- a/monitoring/uss_qualifier/suites/uspace/flight_auth.yaml
+++ b/monitoring/uss_qualifier/suites/uspace/flight_auth.yaml
@@ -22,7 +22,7 @@ resources:
   utm_client_identity: resources.communications.ClientIdentityResource
   utm_auth: resources.communications.AuthAdapterResource?
   second_utm_auth: resources.communications.AuthAdapterResource?
-  planning_area: resources.PlanningAreaResource
+  planning_area_provider: resources.resource.ResourceProvidingResource[resources.planning_area.PlanningAreaResource]
   problematically_big_area: resources.VolumeResource
   system_identity: resources.versioning.SystemIdentityResource?
   test_exclusions: resources.dev.TestExclusionsResource?
@@ -47,7 +47,7 @@ actions:
       utm_client_identity: utm_client_identity
       utm_auth: utm_auth?
       second_utm_auth: second_utm_auth?
-      planning_area: planning_area
+      planning_area_provider: planning_area_provider
       problematically_big_area: problematically_big_area
       system_identity: system_identity?
       test_exclusions: test_exclusions?
diff --git a/monitoring/uss_qualifier/suites/uspace/required_services.yaml b/monitoring/uss_qualifier/suites/uspace/required_services.yaml
index e03e5f2337..f01b954a89 100644
--- a/monitoring/uss_qualifier/suites/uspace/required_services.yaml
+++ b/monitoring/uss_qualifier/suites/uspace/required_services.yaml
@@ -32,6 +32,7 @@ resources:
   id_generator: resources.interuss.IDGeneratorResource
   service_area: resources.netrid.ServiceAreaResource
   planning_area: resources.PlanningAreaResource
+  planning_area_provider: resources.resource.ResourceProvidingResource[resources.planning_area.PlanningAreaResource]
   problematically_big_area: resources.VolumeResource
 
   test_exclusions: resources.dev.TestExclusionsResource?
@@ -67,7 +68,7 @@ actions:
       utm_auth: utm_auth?
       second_utm_auth: second_utm_auth?
       utm_client_identity: utm_client_identity
-      planning_area: planning_area
+      planning_area_provider: planning_area_provider
       problematically_big_area: problematically_big_area
       system_identity: system_identity
       test_exclusions: test_exclusions?