The Defense Department's fiscal year 2022 budget request for the F-35 Joint Strike Fighter's continuous modernization effort is approximately $830 million higher than projected -- an increase the department links to expanded Block 4 test capacity, hardware upgrade development and the purchase of additional spare engines to support the flight test fleet. DOD is requesting $1.9 billion in FY-22 for the JSF program’s Continuous Capability Development and Delivery (C2D2) activity, about $985.4 million from the Air Force, $515.7 million from...