I think one of the previous posts said "complacency kills".
When I was going through US Army UH-1 Crewchief School at Fort Rucker, Al., the Tech. Sgt. always kept saying to us students always approach the UH-1 from the front for obvious safety reasons and the pilot can see you.
Secondly, Always bow to the "Huey"
Lee Norberg
Oakdale, NY