As a young Sarge in the second week of my first operational Nimrod Sqn, I had to fly with the father of Sir Peter Harding's lovechild. He was in the left hand seat and my Flt Cdr was Captaining from the right; I was the Eng.
During the 6 hours spent flying low level over the SWAPS, I found myself repeatedly calling "Height" and "bank angle" as the ACM poled us around the oggin at 200 feet (ish). He didn't seem phased by my constant nagging and to my surprise thanked me for looking after him as he got off the aircraft.
That day taught me to ignore the rank or position of the people that I flew with and interject appropriately if the situation dictated, ie do my job as trained... Obviously worked as I'm still here to tell the tail.