when i was in the corps, we were doing stuff out of marble mountain with CH-53's. extracts, loads, supplies. flew up there to pick up a bunch of gens for the comm guys...and some beer. loaded the 53 and took off. short ride to marble mountain and went into a pitch, nose way up. out rolled 1/2 dozen generators and a pallet of beer from about 100'. generators were toast, but the beer mostly survived.