Assistant Director for Scientific Intelligence, CIA
Agency / Organization· 2 declassified document(s)
Also: AD/SI · ASD/SI
The leadership position of the CIA's Office of Scientific Intelligence, notably held by H. Marshall Chadwell in the early 1950s. The AD/SI authored pivotal memos warning that UFOs presented a national security issue due to the risk of mass hysteria and vulnerability to Soviet psychological warfare.
CIA official who authored key memos leading to the 1953 Robertson Panel on UFOs.