The Air Force has pushed back by at least two weeks its decision on the next-generation Global Positioning System contract award, according to a recent service statement. Boeing and Lockheed Martin are the two companies vying for the GPS III contract, said by Boeing officials to be worth roughly $1.8 billion. Industry officials said earlier this month that the award decision would be made April 17 following rumors that it would be announced at the National Space Symposium in Colorado...