 The KC-135s were redeployed to permit increased B-52 operations at U-Tapao and F-111 deployment at Takhli.The move of the KC-135's to Ching Chuan Kang increased their effectiveness since they would be based nearer to Vietnam refueling areas.In addition five U-Tapao Royal Thai Navy Airfield based radio relay aircraft were moved to Ching Chuan Kang by February 1968, along with approximately 450 additional USAF personnel.