I'll give you a hint. where would those people of entered the compound, would you really want to go that way?
There are two exits.The main gate and the area you entered ingrey shows
I say take the most direct path, for time saving. Try the main gate out first, and if that fails, use the other exit. Make sure to get doctor though.
Doctor : According to the security system, there's a large number of... somethings approaching your current location. They're under the room I'm in and heading towards the dig room...
No because we need to go to the medbay to heal Nivens wounds.
screw the doctor, let her find her own way out.