Aliens Colonial Marines: Place the Motion Sensors to Establish the Perimeter

There are five motion sensors to place, which, given that the rest of the colony's building has an open structure, can be activated in any order. To find the spots where to put the sensors, use the motion tracker. Start off by taking the above passageway leading to the adjacent rooms.

Three of five sensors have to be placed in the medlab, which is the closest to the operations room. In one of the smaller rooms there is also a Dog Tag to take (PFC Trevor Wierzbowski).

Place the fourth sensor at the end of the corridor with disabled turrets (the above screenshot), while the last, the fifth - in the morgue to the right.
- Aliens: Colonial Marines Game Guide
- Aliens Colonial Marines: Game Guide
- Mission 4: No Hope in Hadley's
- Aliens Colonial Marines: Locate Hadley's Hope
- Aliens Colonial Marines: Move Upstairs to Operations
- Aliens Colonial Marines: Receive Orders from Cruz - part 1
- Aliens Colonial Marines: Place the Motion Sensors to Establish the Perimeter
- Aliens Colonial Marines: Reset the Sensor in the Morgue
- Aliens Colonial Marines: Report Back to Operations
- Aliens Colonial Marines: Retrieve a Sentry Turret to Defend Operations
- Aliens Colonial Marines: Deploy the Sentry Turret to Defend Operations
- Aliens Colonial Marines: Receive Orders from Cruz - part 2
- Aliens Colonial Marines: Pick Up the Smart Gun
- Aliens Colonial Marines: Get to the Comm Tower to Find Bella and Reid
- Mission 4: No Hope in Hadley's
- Aliens Colonial Marines: Game Guide
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