The big Texan fellow that smudge referred to was (during my time on Blue Team '67 -'70) Fred Heymeyer from Lockheed. The Allison rep was also a Fred - Halloran.
This latter gent was a really nice, quietly-mannered character who did not, in any way, appreciate being on the flight deck when we carried out our post-inspection ground runs, usually making his excuses and suddenly remembering that he had a pressing job to do in his office!
He was also horrified that we didn't use a safety chain suspended from the crane hook and wrapped around the underside of the power plant when carrying out an engine change. None of us had ever heard of this - and it was not, to my knowledge, in any technical manual - apparently, Fred had previously experienced (somewhere on a USAF base, states-side) the sight of an engine with a flat portion on the bottom after the forward slinging point threads had ripped out of the reduction gearbox during this procedure!
