You duck down against the tunnel wall, using a stack of crates for cover. Through the dust you can see the dim movements of figures nearby, but the red glow of the hangar dances with frantic shadows. The crack of small arms fire is a constant rattle in your ears, and in the distance you can hear the rush of what sounds like missiles.
Stealing another glance over the crates, you can make out about half a dozen rebels hunkered down behind some gear, firing toward an unseen enemy across the hangar. Explosive rounds impact all around from the advancing Terran troops. Just beyond the rebels is the operations room you saw earlier. You think it's still in one piece, and you know what kind of firepower it can bring to bear if this battle continues for much longer.
You need to act, but the tunnel behind you is collapsed, and that group of rebels bars your way forward. The only ammo you have is what's in the single magazine currently loaded, so automatic fire is not an option.