With Best Buy, Cricket, and Leap already signed on as partners, LightSquared has a lot riding on the success of its nationwide LTE network. Unfortunately, the Airforce's concerns about it interfering with GPS have been born by a test run in New Mexico. Officials in charge of the state's 911 systems as well as trucker hat kings Deere & Co. reported loss of service up to 22 miles away from LightSquared's cell tower. The company believes it has a solution to the interference problem, but hasn't specified exactly what the fix might be. Now the 4G wholesaler's future rests on a June 15th report to the FCC detailing the potential issues for both consumer navigators and the precision GPS systems used by the military and airlines -- but when even John Deere is lobbying against you things start to look a little bleak.