Tag
#1948
3 cases tagged 1948.
Project Sign progress report
Progress report of Project Sign, the US Air Force's first formal investigation into unidentified aerial phenomena. Dated December 1948. Released through PURSUE Release 04 on July 10, 2026 as DOW-UAP-D097. The immediate institutional precursor to Project Grudge and Project Blue Book.
DOE files, Sandia / Pajarito / PANTEX, 1948-1950
Three previously classified Department of Energy files covering 1948 to 1950 sightings near the United States' core nuclear weapons sites (Sandia, Los Alamos / Pajarito, and PANTEX). Released through PURSUE Release 02 on May 22, 2026.
Mantell Incident
Captain Thomas F. Mantell, a Kentucky Air National Guard pilot, died after his F-51 Mustang crashed during a high-altitude pursuit of an unidentified object reported by Godman Field tower personnel and civilian witnesses near Franklin, Kentucky.