Case: First UFO Sighting in the United States? Timeline: 1639 Location: Charles River Boston, MA Map: Google UFO Map Type: Possible UFO Landing with missing time evidence observed. Classification: NL CE1 – 5 (see about classification) Source: UFOEvidence.org, Wikipedia.org History.com Synopsis:  In 1639, America’s first UFO was sighted over the Charles River in Boston. Lights sped…