Associated Press: On a wind-swept air base near the Missouri River, the Air Force has launched an ambitious plan to wean itself from foreign oil by turning to a new and unlikely source: coal. The Air Force wants to build at its Malmstrom base in central Montana the first piece of what it hopes will be a nationwide network of facilities that would convert domestic coal into cleaner-burning synthetic fuel. Air Force officials said the plants could help neutralize a national security threat by …