At the end of February 1959, the U.S. government told the world it had launched a satellite that made some measurements, transmitted some measurement data, and then shut down as planned. Documents declassified in 1995 reveal the satellite malfunctioned shortly after launch and apparently crashed. Other formerly secret materials, including a CIA film, reveal that the engineers stayed busy solving problem after problem just learning how to get a satellite up and then use it to replace spy planes.