I hope they do a really through pre-flight if it was really unattened. We once found a couple of beer cans, one on the ground under the ship and one under the throttle bellcrank at the bottom of the hellhole of a Huey that was left unattended overnight in a place thought to be safe. They were absolutely not there the day before. The only way was if someone tossed them on top, they hit the mast, swashplate or topcase and one bounced all the way through and one fell almost all the way through. They were found by a mechanic doing a really good preflight, sticking his head up past the hook for a look-see after spotting the one on the ground. Miller-lite....undrinkable by all but the most drunk people.