Sisters In Crime

On November 1, 1955, United Flight 629 originated in New York, taking off from La Guardia Airport. The plane made a scheduled stop in Chicago before continuing to Denver's Stapleton Airfield, landing at 6:11 p.m., 11 minutes late. At Denver the aircraft was refueled and had a crew replacement. The flight took off at 6:52 p.m. and at 6:56 p.m. made its last transmission stating it was passing the Denver omni. Seven minutes later, the Stapleton air traffic controllers saw two bright lights suddenly appear in the sky north-northwest of the airport. Both lights were observed for 30–45 seconds, and both fell to the ground at roughly the same speed. Upon observing the mysterious lights, the controllers quickly determined there were no aircraft in distress and contacted all aircraft flying in the area; all flights were quickly accounted for except for United Flight 629...