| Headquarters 8th Air Force 57th Air Division 4050th Air Refueling Wing The 4050th ARW was the first SAC flying unit assigned to Westover. The first SAC aircraft to touch down at Westover, a KC-97, landed on April 21, 1955. Click on 4050 ARW for a look at Tom Hildreth's excellent history of the early years of the unit. 99th Bombardment Wing 499th Air Refueling Wing 8th Reconnaissance Technical Squadron |