He stepped through the door, and followed the corridor past the first door, until it arriving where it collapsed, before heading back to the door. He then stepped through, sweeping the room, before heading to the north doors, he kept an eye on the room regardless of its apparent emptiness. He then checked the adjacent rooms, ensuring they were empty, before heading for the desk, only to realize with horror that the drone was already at the desk, frantically pushing buttons, pulling levers, twisting knobs, flipping switches and cackling maniacally.