The Federal Aviation Administration (FAA) plans to launch a new satellite guided landing system at Washington's Reagan National Airport to allow airliners to land in weather that at present would force them to divert to another airport.According to The Washington Post, the plan was conceived before the September 11 terrorist attacks to boost airport capacity in poor weather.FAA officials said it also could benefit security improvements to allow the FAA, the military and the Secret Service to more closely track planes in flight near National down the Potomac River past the White House.