The J-STARS radar system detects, locates, classifies, tracks and targets ground movements, communicating information through secure data links with other command posts.

[3] In January 1943, it moved to RAF St Eval, Cornwall, being the first of four antisubmarine squadrons to arrive there to participate in the Battle of the Atlantic.

Its antisubmarine activity reached a peak in July, when German U-boats concentrated off the coast of Portugal to intercept Allied convoys bound for the Mediterranean.

The 327th flew cargo, passengers, and mail to destinations in Italy, Sardinia, Corsica, North Africa, and southern France.

[1] In the fall of 1966 Operation Ranch Hand expanded its size with the delivery of eleven additional Fairchild UC-123B Provider aircraft that had been authorized earlier in the year.

[9] Due to crowding at Tan Son Nhut, also Saigon's commercial airport, the squadron moved to Bien Hoa Air Base in December.

Crop destruction missions were flown with planes displaying South Vietnamese markings, and a Republic of Vietnam Air Force member flew on board the lead aircraft.

However, on 31 January, its base at Bien Hoa was subjected to intense rocket and mortar attack as part of the Tet Offensive, halting operations.

Six days later, Military Assistance Command Vietnam directed that the spray tanks be removed from the squadron's aircraft and its planes be devoted to airlift.

No operations were flown on 28 February, when another rocket attack destroyed four buildings housing squadron aircrew and heavily damaged another.

[16] During February 1969, in anticipation of a repeat of the previous year's offensive, the squadron deployed to Phan Rang Air Base, returning to Bien Hoa in early March.

[17] As the Nixon administration implemented its plan for American withdrawal from Vietnam, pressure to reduce the squadron's operations increased.

Squadron sorties were to be reduced by 30% by July 1970 and in view of the reduction, eleven Providers were transferred to other units in the 315th Special Operations Wing in November.

However, the squadron remained inactive until January 1996, when it was activated to fly Northrop Grumman E-8 Joint STARS aircraft as part of the 93d Operations Group for air control and target attack radar system.

The 12 ACCS is responsible for organizing, equipping, and ensuring the combat capability of more than 200 airmen in the Air Force's first E-8C Joint Surveillance Target Attack Radar System operational squadron.