Poor guy was trying to find a new job at 54. He had been out of work for a month. Wasn't easy then, isn't easy now.
As to the discussion about 1 page v. multi-page c.v.'s: a c.v. is ADVERTISING. If you get the interview, you bring along a more comprehensive document in which you can go into detail about subject areas which may be relevant but don't merit inclusion on a one-pager.
As to his height: he worked on B-29's in the 1940's. Conceivably the ability to access cramped spaces was an issue then and he merely continued including this out of habit. Same as to his security clearance--most people are proud of holding one (look at all the brouhaha about Trump terminating a clearance) and like to include it on their c.v.'s.