F-35 Joint Strike Fighter Program Executive Officer Lt. Gen. Michael Schmidt is “as frustrated” as lawmakers over the various schedule slips temporarily halting deliveries of the Lockheed Martin-made jets enabled with Technology Refresh 3 upgrades, he told a House defense panel today. The earliest a truncated version of the software needed to support the Block 4 mission capability improvements planned for the aircraft, including for more sophisticated munitions and sensors, can be delivered is “July of this summer,” he said...