carrying Air Force security team personnel crashed en route to Utapao, killing all 23 aboard.
                                                           
Early in the morning of May 13, the Mayaguez was ordered to head for Koh Tang island. Its crew was loaded aboard a Thai fishing boat and taken first to Koh Tang, then to the mainland city of Kompong Song, then to Rong San Lem island. U.S. intelligence had observed a cove with considerable activity on the island of Koh Tang, a small five-mile long island about 35 miles off the coast of Cambodia southwest of the city of Sihanoukville (Kampong Saom), and believed that some of the crew might be held there. They also knew of the Thai fishing boat, and had observed what appeared to be caucasians aboard it, but it could not be determined if some or all of the crew was aboard.

The USS HOLT was ordered to seize and secure the MAYAGUEZ, still anchored off Koh Tang. Marines were to land on the island and rescue any of the crew. Navy jets from the USS CORAL SEA were to make four strikes on military installments on the Cambodian mainland.

On May 15, the first wave of 179 Marines headed for the island aboard eight Air Force "Jolly Green Giant" helicopters. Three Air Force helicopters unloaded Marines from the 1st Battalion, 4th Marines onto the landing pad of the USS HOLT and then headed back to Utapao to pick up the second wave of Marines. Planes dropped tear gas on the MAYAGUEZ, and the USS HOLT pulled up along side the vessel and the Marines stormed aboard. The MAYAGUEZ was deserted.

Simultaneously, the Marines of the 2/9 were making their landings on two other areas of the island. The eastern landing zone was on the cove side where the Cambodian compound was located. The western landing zone was a narrow spit of beach about 500 feet behind the compound on the other side of the island. The Marines hoped to surround the compound.

As the first troops began to unload on both beaches, the Cambodians opened fire. On the western beach, one helicopter was hit and flew off crippled, to ditch in the ocean about 1 mile away. The pilot had just disembarked his passengers, and he was rescued at sea.

Meanwhile, the eastern landing zone had become a disaster. The first two helicopters landing were met by enemy fire. Ground commander, (now) Col. Randall W. Austin had been told to expect between 20 and 40 Khmer Rouge soldiers on the island. Instead, between 150 and 200 were encountered. First,
Lt. John Shramm's helicopter tore apart and crashed into the surf after the rotor system was hit. All aboard made a dash for the tree line on the beach.

One CH53A helicopter was flown by U.S. Air Force Major Howard Corson and 2Lt. Richard Van de Geer and carrying 23 U.S. Marines and 2 U.S. Navy corpsmen, all from the 2nd Battalion, 9th Marines. As the helicopter approached the island, it was caught in a cross fire and hit by a rocket. The severely damaged helicopter crashed into the sea just off the coast of the island and exploded.

To avoid enemy fire, survivors were forced to swim out to sea for rescue. Twelve aboard, including Maj. Corson, were rescued. Those missing from the helicopter were 2Lt. Richard Van de Geer, PFC Daniel A. Benedett, PFC Lynn Blessing, PFC Walter Boyd, Lcpl. Gregory S. Copenhaver, Lcpl. Andres Garcia, PFC James J. Jacques, PFC James R. Maxwell, PFC Richard W. Rivenburgh, PFC
Antonio R. Sandoval, PFC Kelton R. Turner, all U.S. Marines. Also missing were HM1 Bernard Gause, Jr. and HM Ronald J. Manning, the two corpsmen.
Other helicopters were more successful in landing their passengers. One CH53A, however was not. SSgt. Elwood E. Rumbaugh's aircraft was near the coastline when it was shot down. Rumbaugh is the