you were sent to heavy weaponry at guard post.as you would see the different types of weapons stored.yours lay upon a heavy robotic mech that is station near others in a container.there was a label near a lever that says: "Incase of an emergency pull this for heavy unit to be sent if security breach is detected".as you would look at the robotic units.a sudden power outage happens.then the container opens.as you find the emergency power.you notice one of the robotic mechs is missing from its position,you suddenly hear the ceiling creak from above