Misty is reportedly the name of a classified project by the United States National Reconnaissance Office (NRO) to operate stealthy reconnaissance satellites. The satellites are conjectured to be photo reconnaissance satellites and the program has been the subject of atypically public debates about its worthiness in the defense budget since December 2004. The estimated project costs in 2004 were, at the time of statement, US$9.5 billion (inflation adjusted US$13 billion in 2020).
The first satellite (USA-53 or 1990-019B, 19,600 kg) launched for the program was deployed on 1 March 1990 by the Space Shuttle Atlantis as part of Mission STS-36. Objects associated with the satellite decayed on 31 March 1990, but the satellite was seen and tracked later that year and in the mid-1990s by amateur observers. The second satellite (USA-144 or 1999-028A ) was launched on 22 May 1999, and by 2004 the launch of a third satellite was planned for 2009. Circumstantial evidence suggested that the third satellite might be the payload of the Delta IV Heavy launch designated NROL-15, which was launched in June 2012. That launch deposited a payload into geosynchronous orbit but, given the stealth/deception hypothesis, there remains the possibility of other, undetected payloads.