Bankrupted Russian firm's jets may become Air Force One

The US Air Force is about to buy two mothballed Boeing 747s that were abandoned by a bankrupt Russian airline -- and convert these into the next Air Force One, a source said Tuesday.Speaking on condition of anonymity, a source close to the deal told AFP that Boeing is set to sell a pair of 747-8 jetliners to the Air Force.Air Force One is actually two planes -- one for the president and a spare.