NASA engineers plan to pump rocket fuel back aboard the shuttle Atlantis next week in a key test to prove the ship is leak-free and ready for launch around Nov. 10 on a long-delayed military flight.

The shuttle Discovery, meanwhile, bolted atop a NASA 747 jumbo jet, was expected to land at the Kennedy Space Center early Tuesday after a two-day cross-country flight from Edwards Air Force Base, Calif.Discovery glided to a smooth California landing on Oct. 10 to close out a successful four-day mission. Officials said the shuttle came through its launch and landing in excellent condition and that no problems were anticipated readying the ship for its next flight in February.

On launch pad 39A, engineers were readying Atlantis for a critical fueling test next Wednesday to prove a leak that grounded the ship in July has been fixed.