David startles as the door clicks, though he doesn't move for a moment, just staring at it. "Shit," he mutters after a moment, glancing to the door he's hiding behind before he turns his attention to his phone in earnest, fumbling in his pocket for his headphones with his free hand. He brings up cameras as he slips the buds into his ears, the cord hanging around his neck.

It's then that he moves, content that no one's waiting for him behind the new door. He pushes himself up out of the corner and heads for the open door, locking it again behind himself as he heads down this new hall, opening new tabs on his phone. He needs to make some calls while keeping an eye on his own situation - he can't afford to be distracted, but he also needs to figure out who else is in the building.