Vandenberg became the second Director of Central Intelligence in 1946 after a career in the Army Air Forces. This position he held on to until May 1947. In a 1948 Top Secret estimate called 'Estimate of the Situation' ATIC concluded that UFOs were interplanetary spaceships. But the document was ordered to be burned by Vandenberg in August 1948. Many attempts have been made by researchers under the FOIA to trace the 'Estimate of the Situation' but without any luck. He is one of the alleged members of the Majestic-12 group.