Crow's Nest

Crow's Nest is the second campaign mission of Halo 3.

It takes place in a UNSC Base, which "comes under heavy fire" from the Covenant.

It is probably the location seen seen at 00:45 to 00:47 and 00:54 in the Halo 3 E3 2007 Trailer, showing a few Mongooses travelling through it and the Master Chief and Arbiter defending it with AIE-486H Heavy Machine Guns. At approximately 1:02 in the trailer, Drones can be seen picking up marines somewhere in the base, as well.It is also seen in ViDoc: Et Tu Brute at 5:03-5:11,5:18-5:21,05:29-5:33,5:37,5:42,6:10-6:20,and 6:27,6:34-6:37 and 6:35-6:56 Upon completing it on the Normal, Heroic, or Legendary difficulties, the player will earn the "Holdout" achievement and 20 Gamerpoints.