The Project Grudge Cluster: Vital Installations, Lincoln La Paz Green Fireballs, Camp Hood–Killeen Base Sightings, the Walter Winchell Affair, and the May 1949 USAF Recovery Denial (December 1948 – May 1949)

FBI 62-HQ-83894  /  1949-01-31  /  1948-49, institutional hardening