USA-276, also known as NROL-76, is a classified spacecraft operated by the National Reconnaissance Office. Due to being classified, very little information is known about the satellite.
== Background == USA-276 was launched onboard Falcon 9 NROL-76. The Falcon 9 upper stage that carried USA-276 to its orbit made several close flybys of the ISS.
== See also == List of NRO launches Sentient (intelligence analysis system)