According to the regimental Target Intelligence Officer (TIO), Captain Mirza M. Baig, the B-52 was an accurate weapons system which the FSCC employed around Khe Sanh much the same as the other supporting arms. About 95 percent of the Arc Light missions were targeted at the 26th Marines headquarters.[53] Requests were submitted to the 3d Marine Division Air Officer 15 hours prior to the drop at a rate of 8 strikes every 24 hours. Up to three hours before the strike, the TIO, upon direction, could divert the bombers to new unscheduled targets, but after that the Stratofortresses were restricted to their original target. The response time was later trimmed even more by using cells of three B-52s which left Guam and Thailand every three hours; this put the bombers over Khe Sanh every hour and a half. In spite of this streamlining, the B-52s were never as responsive or flexible as the droves of fighter/bombers which were overhead constantly. Nevertheless, the devastating power and psychological effect produced by the Stratofortresses, coupled with the surprise factor, made them an extremely valuable adjunct.[54](146) The type of strike which most impressed the regimental commander, however, was the ground-controlled radar bombing. Although these raids lacked the punch of an Arc Light strike, they were as accurate and flexible as dive-bombing attacks and could be conducted in the worst weather. In fact, the technique was designed especially to cope with the inherent bad weather which accompanied the monsoons in Southeast Asia when attack aircraft could not get below an overcast to hit the target.