F-35 Lightning II Joint Program Office

About Us

The Joint Strike Fighter (JSF) Program, formerly the Joint Advanced Strike Technology (JAST) Program, is the Department of Defense's focal point for defining affordable next generation strike aircraft weapon systems for the Navy, Air Force, Marines, and our allies. The focus of the program is affordability -- reducing the development cost, production cost, and cost of ownership of the JSF family of aircraft.


The JSF will fulfill stated Service needs as follows:
  • U. S. Navy First day of war, survivable strike fighter aircraft to complement F/A-18E/F
  • U.S. Air Force Multirole aircraft (primary-air-to-ground) to replace the F-16 and A-10 and complement the F/A-22
  • U.S. Marine Corps STOVL aircraft to replace the AV-8B and F/A-18 as their only strike fighter
  • United Kingdom Royal Navy & Royal Air Force STOVL aircraft to replace Sea Harriers & GR.7s as a supersonic strike fighter
  • Other Countries Potential JSF customers include current operators of F-16, F/A-18, and AV-8B

Prior to the start of System Design and Development (SDD) in Fall 2001, the program facilitated the Services' development of fully validated, affordable operational requirements, and it lowered risk by investing in and demonstrating key leveraging technologies and operational concepts. Upon SDD contract award to Lockheed Martin on 26 October 2001, the program embarked on full development of three affordable and effective JSF variants.


Field Activities

The Department of the Air Force and the Department of the Navy support the F-35 program with their own civilian and military personnel. Program personnel are assigned from each branch, some may work in the program office in Arlington, Virginia, but most are employed at their home bases across the United States. The Field Sites most heavily involved with the F-35 program are:

  • Edwards Air Force Base, California
  • Eglin Air Force Base, Florida
  • Naval Air Station Patuxent River, Maryland
  • Naval Air Warfare Center, California
  • Wright-Patterson Air Force Base, Ohio

International Participation

The F-35 Lightning II Joint Program Office (JPO) is the United States Government representative and implementing agency for the F-35 Production, Sustainment and Follow on Development Memorandum of Understanding (PSFD MOU) between the countries.

F-35 Partners:
  • United States
  • Great Britain
  • Italy
  • Netherlands
  • Canada
  • Australia
  • Denmark
  • Norway
F-35 Foreign Military Sales Customers

The JPO has signed Foreign Military Sales (FMS) Letters of Offer and Acceptance (LOA) with the following countries:

  • Israel
  • Japan
  • South Korea
  • Belgium
  • Poland
  • Singapore