Hull Breach in the USS Sulaco in A:CM

A Hull Breach occurs in the U.S.S Sulaco after a Keyes throws a grenade in one of the hangars (was trying to hit an Alien).

The alarm sounds and the red emergency lights turn on. The computerized female voice announces a Hull Breach on sections 12, 17, and 31

Complete structural collapse is imminent and the Marines must hurry to the Umbilical Docking Tunnel in order to return to the U.S.S Sephora