Notoriety attached itself to the publicity-shy U-2 in May 1960 when the Soviet Union brought down a CIA flight in which Francis Gary Powers was piloting the aircraft. The U.S. tried to pull a quick one, but the Kremlin knew better: "NASA issued a press release with a cover story about a U-2 conducting weather research that may have strayed off course after the pilot reported difficulties with his oxygen equipment. To bolster the cover-up, a U-2 was quickly painted in NASA markings, with a fictitious NASA serial number, and put on display for the news media at the NASA Flight Research Center at Edwards Air Force Base on May 6, 1960," according to a write-up by the space agency. "The NASA cover story quickly blew up in the agency's face when both Gary Powers and aircraft wreckage were displayed by the Soviet Union, proving that it was a reconnaissance aircraft. This caused embarrassment for several top NASA officials."