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This is a history of the USAF Office of Special Investigations covering 19 July 1948 to 30 June 1950, prepared for the Inspector General on 22 November 1950 and released with redactions by AFOSI under FOIA in December 2010. It describes how OSI was set up under Brigadier General Joseph F. Carroll to bring the Air Force's criminal, counterintelligence and procurement fraud investigations under one command. It also covers the 25 district offices, the headquarters divisions and the investigative procedures. The text does not discuss UFOs.
1. As in the field o:t personnel bRckground investigations, .AFL 20-4 dated 1 ': t'uly 1%� initially charged t,he OSI with the !unction of 2.9 carrying out the cmmter-i.ntelligence mission of the ftir Foree . The transfer of this r.ni:�sion , however, was implemented t.hrough the several directives which transferred the responsibility fo:r personnel backtround ilt'l'estiga.tivns to the Air Force e.nd to the Directorate of Special Inves tigations . Thie transfer was completed on 4 Februa.ry 1949 vhen the counter-int elligence functions at the Direct orate of' lnt,e1ligence DCS/0 were tranaterred to the OSI by a memorandum of agreement tht"Oush Air Force unnurr.bered letter AFOIP 321 .011 . The Director of SpeciAl Investigllltions was subsequently mur.ed to the Interdepartmental Intelllrence Conference • re,;resenting the Air Foree in ef"fe �t.ing eoordina.Hon or all dome stic espionage , counter espiona.�e , sabotage, subversion and other nla.ted intelligence matters a.tfecting int ernal s1i curity. 2. The national aspect ot counter-intelligence investiga:t.ions as dis+.,inguished fr· m. ex.elusive localized interest hns been especially evi-dent. in t he .fact lhat individual situations "!Jertaining to treason. sedition , ""Sbot.a.ge nnd subversive actirtles nonr,a11y have been part. of a pattern having an impact on the country a.a a "''bole , effectively co• batted only on a nHtion.ally inte,grated ha.sis . In. addition t o the normal. nationwide aereet. of counter-intelligence investigations , it hAs fre quently occurred that such investigations receive the jr,int inv�,stiga,tiTe effort. of twa or more Federal investig�tin or law enforcerr,ent agencies both militar:'· and ciT.ilian. Thi s has required that the inve st.igatiTe �urisdicti0n or these Federal agencies be specified l/ and adequate liaison , yst1!lr1s organj zed.
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