Florence Mansmann

Florence Mansmann (1927–2000) served as a First Lieutenant in the U.S. Air Force and in 1964 was stationed at Vandenberg Air Force Base in California, where he was responsible for analysing photographic data from missile tests. Following an Atlas missile test in September 1964 he reported an incident in which a tracking telescope camera recorded an unidentified object approaching a dummy warhead and apparently disabling it with directed beams of light. Mansmann was shown the footage and ordered to remain silent about the incident; his account was later corroborated by camera operator Robert Jacobs.

• U.S. Air Force First Lieutenant (1927–2000)
• Stationed at Vandenberg Air Force Base in 1964
• Responsible for analysing photographic data from missile tests
• September 1964 incident during an Atlas missile test
• Tracking telescope camera recorded an unidentified object approaching the dummy warhead
• Object apparently disabled the warhead using directed beams of light; Mansmann was shown the footage and ordered to remain silent
• Partial corroboration by camera operator Robert M. Jacobs

For the UAP timeline, Mansmann is the senior witness of the 1964 Big Sur footage: his role as the analysing officer gives depth to Jacobs's observation because a second military witness with direct access to classified missile test data confirms the event. In the list of possible UAP influences on U.S. nuclear technology, the Mansmann/Jacobs case is one of the hardest pieces of evidence.