

On April 1, 1990, due to the restructuring of the unit's tasking, the unit was again designated a squadron. This increased responsibility once again elevated the unit to group status on May 1, 1980. During this period, the unit became the workhorse for the command's airborne operations, expanding its role in electronic warfare capabilities through direct participation in theater exercises such as TEAM SPIRIT, held annually in South Korea. The reorganization expanded the command's and unit's operational mission to include the use of electronic warfare capabilities for both offensive and defensive combat operations in support of Air Force Command, Control and Countermeasures. Air Force Security Service became the Electronic Security Command in August 1979, the 6990th was renamed the 6990th Electronic Security Squadron. In July 1975, with the cessation of combat support missions and the concurrent reduction of responsibilities, the unit was again designated a squadron. The unit's involvement in the Vietnam War continued through April 1975 with participation in FREQUENT WIND Operations, supporting the withdrawal of U.S. In September 1971, the unit was re-designated the 6990th Security Group and headquartered at Kadena to cope with its expanding cryptologic role in the Pacific theater as well as the addition of communications security responsibilities. It additionally provided C-130 direct support from a detachment at Cam Ranh Bay, Republic of South Vietnam. The unit's first mission was to provide RC-135 direct support to COMBAT APPLE Operations in Southeast Asia. At that time, it was part of the 6922d Security Wing based at Clark Air Base, Philippines, with operational control vested in the Pacific Security Region, which eventually became the Pacific Electronic Security Division. The 6990th Security Squadron was activated at Kadena on Jby Maj. When tasked, the unit also provides crews aboard the RC-135U COMBAT SENT and RC-135S COBRA BALL. In the run-up to a crisis, the RC-135 conducts intelligence preparation of the battlefield, while during contingencies or war, the unit provides near-real time information awareness to command-and-control assets and direct threat-warning support to tactical aircraft and other warfighters. Air Force's premier manned intelligence, surveillance and reconnaissance aircraft. Central Command and augment other 55th Wing requirements as necessary. The unit's airborne cryptologic linguist aircrew, airborne special signals operators, airborne maintenance specialists and information integration officers fly operational reconnaissance missions aboard the RC-135V/W RIVET JOINT in both U.S. Operating from Kadena Air Base, Okinawa, Japan, the 390th Intelligence Squadron ensures information superiority to the "last tactical mile" by providing tailored intelligence to warfighters, combatant commanders and national decision-makers.
