Project 10073 Record Card — Caliente, Nevada, 16 February 1958

This document comprises a Project 10073 record card and associated teletype communications regarding an Unidentified Aerial Phenomena (UAP) sighting reported on February 16, 1958, in Caliente, Nevada. A civilian witness, deemed dependable, reported observing a single, round, white object, described as being the size of a grapefruit. The object was observed for approximately 15 minutes, moving in a straight line toward the south at an estimated altitude of four to five miles. The witness reported that the object made no sound and left no trail or exhaust. The observation occurred at dusk, and the witness noted that the sun caused a glare off the object. The report was initially passed from a civilian in Caliente to the Air Defense Filter Center (ADFC) in Bakersfield, California, and subsequently relayed to P-59 and the 750th ACWRON. The official conclusion recorded on the project card states that the object was a 'possible weather balloon,' but explicitly notes that because no elevation, azimuth, or wind data were provided, a definitive conclusion could not be reached. The teletype messages confirm the transmission of this data between military units, including the 27th Air Division and the Air Technical Intelligence Center, referencing Air Force Regulation 200-2. The documentation highlights the procedural handling of civilian reports during this period, emphasizing the reliance on specific meteorological and positional data to categorize sightings, which were frequently lacking in civilian accounts.