 "Telstar I" lasted the longest of the satellites that were clearly damaged by the "Starfish Prime" radiation, with its complete failure occurring on February 21, 1963.In 2010, the United States Defense Threat Reduction Agency issued a report that had been written in support of the United States Commission to Assess the Threat to the United States from Electromagnetic Pulse Attack.The report, entitled "Collateral Damage to Satellites from an EMP Attack," discusses in great detail the satellite damage caused by the "Starfish Prime" artificial radiation belts as well as other historical nuclear events that caused artificial radiation belts and their effects on many satellites that were then in orbit.