LM is building 22 F-35s under the current System Design and Development Program. 15 will be used for flight test and 7 for static test. Another is a full scale pole-mounted radar signature test airframe. Of the flight test aircraft 6 will be USAF F-35A,s  5 Marine F-35B,s and 4 Navy F-35C,s . The USMC F-35B,s will also be evaluated by the Royal Air Force and the Royal Navy. In addition to the 22 SDD aircraft , 5 Low Rate Initial Production Lot 1 F-35A,s have been ordered. That,s about it.