Vietnam War Era USAF 55th ARRS Pararescue PJ Patch Cheesecloth Gauze Back Patch 1960s.  This patch came from the estate of a retired 55th ARRS USAF PJ.  Patch is rare and very hard to come by in this condition.  Patch measures approximately 3.5 inches from top to bottom and 3 side to side.  See photos for more info or feel free to ask any questions you may have.