Project Grudge

4 declassified cases mention this

• PDF · 1971CIA-UAP-019, Australian Dept of Defense Scientific and Intel Aspects of the UFO Problem
• PDF · 1952CIA-UAP-002, Scientific Advisory Panel on Unidentified Flying Objects, Report, 1952-1953
• PDF · 1949DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949
• PDF · 1948341_110448_Records_Relating_to_the_Collection_and_Dissemination_of_Intelligence_1948-1955-TS_CONT_No.2_2-5300-2-5399