Marcus eyed the room warily. He considered stealth, and was about to disregard it completely, when his eye caught sight of the gun, and he approached it, touching the crease in the metal.
I use any relevant skill I have, plus common sense, to determine if a suitably brawny barbarian could bend it back into firing shape, as well as determine the type of gun (maybe not specifics, but is it a turret? a submachine gun? An assault rifle?)
He moved away from the gun, mentally filing any information gained into another side of his mind, and approached the lockers. He wasn't exactly a computer geek. Marcus decided he'd let his allies deal with the computer if they felt like it. However, the mask looked interesting. The overalls weren't exactly his style, but he picked up the mask and looked it over, examining it for danger.
Still, toying with the mask in his hands, he returned to the doorway and poked his head out, eyeing his companions.
"Clear," he whispered, "But keep it quiet." To back up his words, he pointed to the gun with the mask in his hand. "Follow me at a distance. Keep your weapons at the ready. Anya, watch our backs, will ya? Asha, go second, your pistol's better in tight spaces then their weapons. And Carn, keep Elvis under some godd**n control."
He then slipped the mask onto his face, and turned to face the corridor ahead of them. He put his shield on his arm, and gripped his axe in his other hand. "Let's let slip the dogs of war," he muttered under his breath, a feral grin on his face beneath the mask.
Hopefully whatever bent that gun was still here.
If nobody objects, or wants to check out that computer, Marcus will take the front to tank some damage and lead us down the... right hand corridor, why not? He also requests a stealth roll