F-35 Joint Strike Fighter (JSF) Program: Background and Issues for Congress

The largest procurement program in the Department of Defense (DOD), the F-35 Joint Strike Fighter (JSF), also called the Lightning II, is a new aircraft being procured in different versions for the United States Air Force, Marine Corps, and Navy. Current DOD plans call for acquiring a total of 2,456 JSFs. Hundreds of additional F-35s are expected to be purchased by several U.S. allies, eight of which are cost-sharing partners in the program. The F-35 promises significant advances in military capability. Like many high-technology programs before it, reaching that capability has put the program above its original budget and behind the planned schedule. The administration?s proposed FY2011 defense budget requested about $6.8 billion in procurement funding for the F-35 Joint Strike Fighter (JSF) program. This would fund the procurement of 23 F-35As for the Air Force, 13 F-35Bs for the Marine Corps, and seven F-35Cs for the Navy. CRS Report for Congress.