Isley 2001, 9, 13. The Dispatchers log notes at 3:28: “Jet engines heard now very clearly,” and at 3:30,“could hear engines” (0828, 0830). Werlich states: “WHEN ALMOST OVERHEAD, A LOW MUFFLED JET ENGINE SOUND WAS HEARD. THIS OCCURRED TWICE DURING THE SIGHTINGS” ( Basic Reporting Data, 2). Later, as a B-52 passed by the observers at N-7, Jablonski noted, “As to avoid confusion between the plane and the object Base Op’s had pointed out where and when we saw the B-52. Must add that the B-52 engines could be easily heard while the UFO made no sounds to be heard at about the same distance” (AF-117, 7).