Rico. In 1952 the group was again inactivated on 16 June 1952 as the Air Force reorganized its wings into the tri-deputate system. Modern era The group was reactivated in on 29 August 1991 as the 55th Operations Group and assigned to the 55th Wing. It was activated on 1 September 1991. The 55th OG was the operational component of the wing under the new "Objective Wing" concept adapted by the Air Force, and was bestowed the history and honors of the 55th 55 Strategic Reconnaissance Group. The 55th Operations Group activated with one of the largest and most diverse missions in the USAF. The 24th Reconnaissance Squadron at Eareckson AFB, Shemya, Alaska, joined the group with its Cobra Eye and Cobra Ball missions. On 1 April 1993, the 55th OG Wing took operational control of the 11th Airlift Flight. The 11 ALF flew operational airlift missions in support of the commander of the United States Strategic Command and transported high-ranking military, Department of Defense officials, and members of Congress. This unit has since inactivated and the mission has reverted to Air Mobility Command. The 2 ACCS also inactivated in 1994 with its mission transferring to the 7th Airborne Command and Control Squadron. Likewise, the 24 RS inactivated in 1994 and its mission transferred to the newly activated 45th Reconnaissance Squadron. Also in 1994, the 1 ACCS National Emergency Airborne Command Post was renamed the National Airborne Operations Center to reflect the addition of a support role to the Federal Emergency Management Agency. In October 1998, the 55th OG transferred control of the Boeing EC-135 Looking Glass mission to the United States Navy's E-6B Mercury TACAMO aircraft and the 7th Airborne Command and Control Squadron, which flew the Looking Glass aircraft, inactivated. In September 1999, the 338th Combat Training Squadron was activated and assigned to the 55th Operations Group. Additionally, in March 2000, the group received its 16 RIVET JOINT aircraft. The group conducts operations from Offutt AFB, Nebraska; Kadena AB, Japan; RAF Mildenhall, United Kingdom; Souda Bay Naval Support Activity, Crete; and other locations around the world. The 55th OG is the largest Operations Group in Air Combat Command and the second largest in the Air Force. Since the end of the Cold War, the 55th Operations Group has maintained an unmatched operational tempo, supporting every US contingency worldwide. These missions have included but were not limited to reconnaissance,