A recent report by the Government Accountability Office that labels the F-35 joint strike fighter program "unexecutable" does not take into account changes already made to the program plan, officials say. The report by Congress' investigative arm is the first of five annual reviews of the JSF program required by Congress. The F-35 is intended to be a stealthy, relatively low-cost, high-performance aircraft for use by the Navy, Air Force and Marines, as well as by Britain's Royal Navy and Royal Air Force and other U.S. allies. The fighter - a portion of which is produced by Northrop Grumman Corp....