OTD, 1st flight of 1st production P3V-1 "Orion" BuNo 148883 in 1961 and YB-52 49-231 in 1952. #p3orion #b52bomber #usaf #usnavy #aviation #aviationhistory #airplanes #jet #jets #aircraft #aviationlovers #aviationphotography #avgeeks #history