Several other deficiencies existed in the air defense system that the 1st Marine Aircraft Wing had inherited. There were no ground antiaircraft weapons at the Marine fields until a .50 caliber automatic weapons battery was detached from the 1st 90mm Antiaircraft Artillery Battalion, FMF, early in 1952 and sent to K-3, the home field of MAG-33. Other inadequacies were deficient equipment--a search radar limited to 30 miles out and 20,000 feet up--and lack of an interceptor aircraft capable of rising to meet the faster swept-wing jets the enemy was employing. Airfields housing Marine air groups did not have revetments for either aircraft parking areas or ordnance dumps. Not all of these weaknesses were acquired with assumption of the air defense mission. There had been a general lack of concern about air defense throughout South Korea. This attitude had resulted from the air supremacy which the Fifth Air Force had quickly established. Camouflage was seldom practiced. Dispersal of aircraft, supply dumps, and servicing facilities was employed only rarely. In fact, at K-6, there was not sufficient land to properly scatter installations and aircraft. Defense of the southern sector was commanded from K-3 (Pohang), the site of the TACC (Major Fred A. Steel). Marine Ground Control Intercept Squadron 1 (MGCIS-1) was set up on the west coast at K-8 and MGCIS-3 (Lieutenant Colonel Owen M. Hines), on the east coast, near Pohang. Each of these intercept units had an early warning detachment operating off the mainland. Antiaircraft artillery was provided by the 90mm AAA battalion, which was controlled, however, by EUSAK. The 1st MAW commander specified a ready alert status for two aircraft during daylight hours. Just before sunrise and sunset, four planes were put on strip alert. Aircraft for night alert were provided by VMF(N)-513 until April, when the requirement was withdrawn. By 30 June 1952, 1st MAW air defense operations had destroyed a total of five enemy planes. The F7F night fighters flown by VMF(N)-513, moreover, had frequently been scrambled to intercept hostile night intruders that had penetrated into the Seoul area, or northern sector. This low kill rate did little to atone for the steadily increasing number of Marine aircraft lost to enemy flak. Although the number of friendly planes destroyed or damaged in air-to-air combat during the latter half of Korean hostilities diminished sharply compared to the early period, losses due to ground fire were reaching alarming proportions in early and mid-1952. In May 1952 Navy and Marine air losses to enemy action were twice the total for April, and the June figure was even higher. By June, the Communists had massed more than half of their antiaircraft artillery along communication routes that FAF struck nearly every day.