On February 10, 2016 at 11:40 UTC the " Delta 4M+(5,2)” rocket-carrier was launched from Vandenberg Air Force Base, California, USA. The launch was performed by United Launch Alliance supported by the 30th Space Wing of US Air Force. The rocket orbited the payload named as NROL-45 for the National Reconnaissance Office. The NROL (National Reconnaissance Office Launch) abbreviation is used to identify classified satellites operated by the United States National Reconnaissance Office. The experts suppose that the rocket orbited the “Topaz-4” sttelite, the fourth in a series of radar-imaging satellites built by Boeing for the National Reconnaissance Office.