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Summary
The US National Reconnaissance Office launched the largest spy satellite ever sent into space. A Delta-4 Heavy rocket blasted into space just after sundown Sunday, carrying a new spy satellite. The Air Force is not releasing many details about the launch, calling it a classified mission. Sunday's launch was only the fourth time that the giant booster has flown since its first voyage in 2004. The Delta-4 Heavy is the military's largest rocket in service. The launch had been scrubbed several times in recent months due to technical problems.
