The Pentagon is spending billions on these babies; they gotta try 'em out, right?
:eyes:
F-35
Joint Strike Fighter (JSF)
The F-35 is the result of the Defense Department's Joint Strike Fighter (JSF) program, which sought to build a multirole fighter optimized for the air-to-ground role with secondary air-to-air capability. The JSF requirement was to meet the needs of the Air Force, Navy, Marine Corps and allies, with improved survivability, precision engagement capability, and reduced life cycle costs. By using many of the same technologies developed for the F-22, the F-35 has the opportunity to capitalize on commonality and modularity to maximize affordability.
US Air Force
The Air Force expects to purchase 1763 F-35s to complement the F-22 Raptor and replace the F-16 as an air-toground strike aircraft. The Air Force variant includes an internal gun, infrared sensors, and laser designator. This is the technologically simplest version of the JSF, in that it does not require hover or aircraft carrier capability. Therefore it does not require the vertical thrust or the handling qualities for catapult launches, augmented control authority at landing approach speeds and strengthened structure to handle arrested landings. At the same time, the Air Force F-35 will have to improve upon the high standards created by the F-16. Since replacement of the F-16 by the F-35 will entail a significant payload reduction, the F-35 faces a very demanding one shot one kill requirement.
http://www.fas.org/man/dod-101/sys/ac/f-35.htm