AFOSI provides professional investigative service to commanders of all Department of the Air Force activities. Its primary responsibilities are criminal investigations and counterintelligence services. In addition to the command's headquarters at Quantico, Va., AFOSI has seven field investigations regions aligned with Air Force major commands. Located around the world are subordinate field units of these regions comprised of squadrons, detachments and operating locations. In sum, AFOSI operates more than 290 field units worldwide.
