I was hitchhiking on a USAF flight back from Vietnam one time and they were carrying some very special cargo on one particular flight. It stopped at Dover AFB in Delaware where the main DOD mortuary is for returning deceased members. Since we had a long turn around time there, we were invited to take a tour of the facility. It was a sobering experience, but I can't say how professional the people there that we met were. I could not have done their job.
https://www.youtube.com/watch?v=t972OXvFnpA