It seems that who ever typed these memos lacked knowledge on military protocol and usage. First no officer in the military will ever prepare a CYA memo. If they desired to retain a record of events it would be simply memo to file or memo for record. Any one using CYA and have it leaked to anyone would be a kiss of death for professionalism.
Second, super script was not available in manual typewriters. Even IBM selectrics at the time didn't have such type balls available and usually such typewriters were too expensive for the run of the mill military unit at the time.
Third, orders are formal documents not memos.
Fourth, If a pilot does not get a physical within the required time period, loses his flight status, nothing more. That means he loses flight pay.
Just those four areas are sufficient to justify fraud.
SPOOKIE
Yea, saying the authenticity is "inconclusive" is a misnomer. It's not entirely 100% "747 in medieval England" impossible but it's about a million to one it's even "accurate but not authentic".