Update: They're planning to shoot down the 5,000-pound satellite from a Navy ship, according to Bloomberg. The shoot-down has been delayed due to poor weather.
A large US spy satellite has lost power and is headed for a crash in late February or March, government officials requesting anonymity revealed to the Washington Post. The satellite, which no longer can be controlled, could contain hazardous materials, and it's unknown where on the planet it might come down, they said. The information is reportedly classified as secret.