USA-268

USA-268, also known as NROL-37, is an American signals intelligence satellite. Though officially classified, it is presumed to be an Advanced Orion satellite, making it one of the largest and most expensive satellites ever built.

Launch
USA-268 was launched at 17:51 UTC on June 11, 2016 from Space Launch Complex 37B, on its second attempt. It was the ninth flight of a Delta IV Heavy, and the fifth carrying an Advanced Orion.