I never met Fairborne or Sykes, But Rex Applgate had a very inflated image of himself, much like Col. Cooper.
You couldn't hold a conversation with the Col. You listened while he lectured.LOL!!
Hatcher was a very interesting person. At one time or another in his military carrer, He was in charge of both Springfield and Frankford arsnels.
He did many interesting things, one of which was co-inventing" the 35 Whelen, which he named for Towsand Whelen.
Respectfully
Terry