With haz-mat suits at the ready, a quick response team stood on alert to head anyplace on Earth that the pieces of a lame satellite shot down by the military might fall.
The recovery squad, dubbed Operation Burnt Frost, is made up of military and civilian personnel from at least 15 government agencies including the Air Force, Coast Guard, and Environmental Protection Agency. The unit was assembled in less than a week with the goal of protecting people from remnants of the bus-sized satellite, especially the potentially hazardous fuel tank.
"This is an incredible effort," Army Brigadier General Jeffrey Horne, leader of the team, said on Thursday. "What we're doing is to make sure that we're ready as soon as we're called."
A Navy cruiser blasted the errant satellite with a missile on Wednesday night. Officials said the strike appeared to have accomplished its main goal of exploding a tank of toxic fuel 210km above the Pacific Ocean.
General James Cartwright said on Thursday that it could be 24 to 48 hours before the military knows whether the tank was destroyed. He said the team was prepared to collect the debris and fuel tank if needed.
Normally, a dying satellite would fall to Earth on its own, with little chance the pieces surviving re-entry would actually hit something.
The concern with this satellite was that the 450kg fuel tank was nearly full of hydrazine, a toxic fuel often used to power spacecraft. Officials warned that if the tank hit ground, the tank itself or fumes from the fuel could hurt or even kill people.
The satellite became uncontrollable almost immediately after it was launched in 2006, when it lost power and its central computer failed. Left alone, the 2,270kg satellite would have hit Earth during the first week next month, military officials previously estimated.
Early on Thursday, many of the satellite's remnants were already starting to re-enter the Earth's atmosphere, mostly over the Atlantic and Pacific oceans, and none of the pieces was larger than a football, Cartwright said.
If the fuel tank were to land in the ocean, the water would neutralize the hydrazine, Horne said previously.
The task force assembled at McGuire Air Force Base in central New Jersey was pulled together primarily to recover any of the shrapnel if it were to fall on land.
Many members of the team have experience in similar situations involving locating debris over a large territory and cleaning up hazardous materials, such as recovery operations after the space shuttle Columbia explosion or the 2004 cleanup of an oil spill that dumped thousands of liters of crude in the Delaware River.
If called into action, team members would don hazardous materials suits to guard against hydrazine on the ground or in the air, and wear breathing apparatuses to avoid the fumes.
Other factors that could come into play would be whether the fuel leaked into sand, which tends to be very porous, or clay, which can absorb the material, said Duane Newell, 44, a chemist with the EPA who's part of the response team. Or the fuel tank could land near a river or creek, contaminating the water supply.
"There's a whole gamut of possibilities that have to be assessed," Newell said. "It's a significant challenge based on a number of unknowns."
On the chance that debris falls in a hostile environment such as Iraq or Afghanistan, the unit has been outfitted with helmets and body armor. Team members also have been vaccinated against diseases such as yellow fever and armed with anti-malarial pills.
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