Given Mape's obvious obsession it's plausible that she is "dirty" in this forgery scam (i.e. Barnes is ready and she needs something to back it up)
I believe the while Burkett may become the "fall-guy" - there are just too many errors in the memos that a career guardsman like Burkett would be able to avoid making on his own.
If he senses the DNC or CBS turning on him.....he will bring them down.
Agreed, partially: Burkett seems implicated but may not be exclusively responsible for the forgeries. However, as an Army, not an Air Force, officer, he'd miss exactly the same abbreviation-differences that appear in the memos.