A former FIRST CHIP/RIVET CHIP RB-57F was flying out of Kirtland AFB, New Mexico, as a WB-57F (63-13292) on 27 June 1972. The aircraft unexpectedly entered a Mach tuck, pitching the nose downward. The circumstance was exacerbated by wing flutter from the airflow over the wings, and the high-altitude aircraft came apart at 50,000 feet over the Manzano Mountains south of Albuquerque. Two souls were lost. Lt. Col. James B McCravy and Capt. Harold "Hal" Moore in the back seat.