My experience was at an AFROTC summer training camp which admittedly is not as rough as the usual boot camp (or at least wasn't in those days). Two other cadets and I shared a room in an old barracks with a closet that had a sliding door. Our training officer was a spit and polish type of officer who did everything by the book. During one of our room inspections he decided to check the closet to make sure our clothes were hung properly. As we stood by our beds at attention, he marched over to the closet. and stood straight as an arrow in front of the closet with the tips of his highly polished shoes touching the wall at the base of the closet. As if he was starting a salute, he brought his right arm up, placed his fingers on the edge of the sliding door and very smartly and with force, gave the door a shove to the left. Instead of opening the door jumped off the track and landed on his shoes. He wasn't hurt but his shoes had two very un-military scuff marks. Without saying a word he left. On future inspections he ordered one of us to open the closet door for inspection.