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SIU Ships Support Satellite Shoot-Down

April 2008

Seafarers, including members of the SIU Government Services Division, recently helped make history in an event that resembled something out of Star Wars. Three SIU-crewed military support ships assisted in the U.S. Navy’s interception and shoot-down of a 5,000-pound, non-functioning National Reconnaissance Office satellite over the Pacific Ocean. The U.S. Military Sealift Command’s (MSC) SIU-crewed missile range instrumentation ship USNS Observation Island provided telemetry information. The ship, which can monitor objects in space, tracked the satellite and collected data on it both before and after the missile launch. The guided missile cruiser USS Lake Erie, positioned west of Hawaii, launched the SM-3 missile to intercept the satellite on Feb. 20. A second Seafarers-crewed MSC ship, the fleet replenishment oiler USNS Guadalupe, mobilized from San Diego to support the mission. Instead of conducting a two-week repair period, the ship was given short-notice tasking and got under way with enough fuel to replenish the other vessels involved in the operation, according to the agency. Hours after the interception, the Guadalupe provided about 50,000 gallons of fuel to the Lake Erie and 45,000 gallons to the guided missile destroyer USS Decatur. Three MSC fleet ocean tugs were standing by to recover debris. Later, it became known that the SIU-crewed SBX-1 – a unique combination of an advanced X-Band radar mounted aboard an oceangoing, semi-submersible platform – also aided in the mission. “I’m proud that our MSC ships were able to support the intercept on such short notice,” said Capt. David Kiehl, commander of MSC’s Sealift Logistics Command Pacific. In late January, the U.S. government notified other nations that the satellite was unresponsive and would make an uncontrolled reentry in late February or early March. The decision was made to bring down the satellite because of the likelihood that the satellite could release hydrazine fuel upon impact, possibly in populated areas. The Navy modified three SM-3 missiles to strike the satellite. According to the Defense Department, the satellite was travelling at more than 17,000 mph and approximately 133 miles above Earth when it was struck. ###