A F-35 fighter jet refuels between missions aboard the USS Wasp off the coast of Virginia during sea trials, October 18, 2011. Critics say the F-35, which comes in three variants, is an ill-conceived multipurpose aircraft that tries to do too many things and will ultimately excel at none. Its stealthy fuselage and high-tech systems, some say, are so complex and difficult to maintain they will inevitably make it unaffordable. But advocates view the aircraft as a war-fighting platform for the networked, iPad generation that will revolutionize the way America fights. Photo taken October 18, 2011. REUTERS/David Alexander (UNITED STATES – Tags: MILITARY TRANSPORT)