You ain't ever been on no bug hunt like this. Ninety per cent of your squad is wiped out by a hive of hideous xenomorphs that you don't dare kill. Med lab in the main structure won't hold for long - those pesky xenomorphs are pretty friggin' smart. They'll get in there somehow. They'll get in there and use your body as a host for their momma's bubs. But in this situation, with certain death a reality, it's best to stay frosty.