Sarcasm?
Ummm... all you have to do to fool the auto-superscript is place a space between the number and the "th" - which shows up frequently in these documents. And it is very simple to use a lowercase "L" as a number 1 - that is just an asinine statement. Gotta love these "experts" - I hope they are independently wealthy, because their reputations just went down the toilet...
You mean, like this?
111th (all "1"s; in Times New Roman)
1l1th (Middle "1" replaced with a "l"; also in Times New Roman)
Well, it's a whole lot safer than defaming live fighter jocks.
I hope it was taken as sarcasm. That is the stupid part of this to believe that the commaning officer of an F102 squadron - who by the way, knew at the time that he was at the end of his career - was concerned about CYA memos or concerned to have picture perfect memos for his personal file.