"CAF", I don't know.
"JTT" =John Taliaferro Thompson, inspector for the Army, later on the Thompson-LaGarde commission to determine the new pistol caliber after the failure of the .38 Colt in the Phillipines campaigns against Moro insurrectionists hopped up on drugs and religious fervor. Then, in WWI, developed the Thompson sub-machine gun. Retired as Major General. http://en.wikipedia.org/wiki/John_T._Thompson