"1972-10-23Z"^^ . . "in combat or operational accidents" . . "Both sides claim victory" . "North Vietnam" . "10 aircraft lost" . . "United States" . "Operation Linebacker was the title of a U.S. Seventh Air Force and U.S."@en . "134 aircraft lost" . "PAVN claim: 651 aircraft shot down, 80 warships sunk or damaged" . . .