eeeeeeeeeeek, i know what you mean. when i worked for willie nelson, i locked myself in a little bathroom in a travel trailer and just about lost it.......i had to remove the tiny window and climb up and then drop down to the ground....i was covered with sweat and shaking so much that i could hardly walk.......phew! i'm very careful now about small and airless spaces.......glad you knew how to work the door thingys.........p