Nine days before Christmas in 1965, the two astronauts, Walter "Wally" Schirra and Tom Stafford, aboard Gemini 6 suddenly sent an odd report to Mission Control that they saw an "unidentified flying object" about to enter Earth's atmosphere, traveling in the polar orbit from north to south. They interrupted the tense report with the sound of “Jingle Bells” with “Wally” Schirra playing a small harmonica and accompanied by Tom Stafford with a handful of small sleigh bells they had smuggled aboard for that very occasion.