Realizing they are trapped , they embrace and detonate a grenade ( taking a number of Aliens with them ) .
During the Aliens ' assault on the operations room , Gorman tries to rescue Vasquez but his pistol runs out of ammunition .
Realizing Aliens are trapped , Aliens embrace and detonate a grenade ( taking a number of Aliens with Aliens ) .
During the Aliens ' assault on the operations room , Gorman tries to rescue Vasquez but his pistol runs out of ammunition .