High Quality Content by WIKIPEDIA articles! USNS Sword Knot (T-AGM-13) was a missile range instrumentation ship which operated as USAFS Sword Knot on the United States Air Force`s Eastern Range during the late 1950s and early 1960s. Sword Knot operated under an Air Force contract with Pan American Airways Guided Missile Range Division headquartered in Cocoa Beach, Florida.