So me and my partner had just wheeled this guy into Trauma One and we're briefing the ER staff when I start unbuckling the straps on the stretcher. I unbuckled all the buckles and started untangling the IV tubing from the guys arm when all of a sudden I hear this "clunk". My ass puckered up so tight that it would have strangled a straight pin. I slammed my eyes shut as soon as I heard it. I said an instant prayer and waited to hear some really bad stuff. Like the screams of a legless nurse or the sound of steel ripping through the walls. When I heard the doc hollering my name I was actually relived at hearing that. The bad part, I had the head end when we were wheeling the guy in, so I knew he was on O2 because there was a NRB on his face and I could hear the O2, so I knew that the tank was on the stretcher somewhere. I just didn't think about it when I was unbuckling the straps. The tank and the pt were covered with a blanket, so I never saw the tank, and I think that's why it slipped my mind. Everybody was cool about it. My partner tried to take some of the blame because he didn't tell me exactly where the tank was on the stretcher, but I shot that down real quick, simply because I knew it was there so I should have looked for it. The doc was cool to. He said not to sweat it, he wouldn't talk to the director about it since I had apologized. I told our director about it anyway, and she was cool with it. She just told me to be more careful. Moral of the story, watch those cylinders!!