On December 1, 1970. the USAF began another interdiction campaign named COMMANDO HUNT V, the third so-named dry season campaign in as many years.* In Commando Hunt V, the USAF attacks focused on the Laotian panhandle, although tactical aircraft periodically struck targets in northern Laos and Cambodia. B-52s and fighter-bombers hit the passes between North Vietnam and Laos, creating chokepoints that forced the North Vietnamese to channel traffic and reinforcements moving southward so that gunships, B-57G bombers, and other tactical aircraft could more easily destroy them. The Icitoo Wrtrre automated system of sensors that the USAF airdropped along the Ho Chi Mirth Trail was designed to aid in the location of trucks and other moving targets. The South Vietnamese and U.S. military leaders intended this aerial campaign to prevent a sustained enemy offensive in South Vietnam, thus giving the Republic of Vietnam more time to equip with modem weapons and train its armed forces. To that end, between January 30 and March 24. 1971, the ARVN entered Laos near Khe Sanh, 15 miles south of the DMZ. The Allies in this operation, code-named LAM Son 719, hoped to cut a segment of the Ho Chi Minh Trail and capture Tchepone, the hub of the Communists’ logistics system in Laos. From February 8 to March 24 the USAF supported Lam Son 719 by airlifting South Vietnamese troops and supplies into Khe Sanh. Flying tactical air strikes in Laos, and furnishing forward air control (FAC) in the battle area.
On March 7, 1971, the Army of the Republic of Vietnam reached Tchepone; however, North Vietnamese forces inflicted such heavy casualties that South Vietnamese commanders were forced to withdraw 3 days later. The USAF then covered U.S. Army helicopters evacuating ARVN troops with heavy tactical air and B-52 attacks. By March 24 the last ARVN troops retumed to South Vietnam, but they had abandoned large quantities of military hardware, including trucks and tanks, during the evacuation. in spite of the ARVN‘s chaotic withdrawal. the North Vietnamese army also suffered heavy losses and did not begin another major offensive in South Vietnam for almost a year.
The COMMANDO HUNT V campaign saw the first extensive use of 2 new USAF weapons: laser-guided bombs and “daisy cutter” bombs. On
February 3. 1971, F-4s equipped with laser-seeker pods and laser-guided bombs destroyed a 37-mm antiaircraft site along the Ho Chi Minh Trail.
Then, on February 19, F-4 pilots used this weapon to destroy 2 trucks. On March 3 the Seventh Air Force used laser-guided bombs to destroy tanks that had been spotted near Tchepone. The USAF now had the means to hit accurately small targets on the first try. During LAM Son
719. the USAF also used large, high-explosive “daisy cutter” bombs (up to 15.000 pounds) to clear landing zones for helicopters. These bombs.
extracted by parachute from C-130s, exploded a few feet above the ground and cleared enough area in the jungle for I or 2 helicopters to
land. The ordnance allowed engineers to establish suitable landing zones quickly in enemy territory and contibuted substantially to the rapid
movement of troops into and out of Laos.
All the while, the war raged in other regions of Southeast Asia. From January through April 1971, the USAF launched numerous retaliatory strikes against surface-to-air missile and antiaircraft sites in North Vietnam, and USAF pilots also frequently flew close air support missions in Cambodia and northern Laos. Meantime, on February 18 the North Vietnamese delegation once again boycotted the Paris peace talks, although on April 8 it reappeared to resume negotiations.
