Lockheed Martin Missiles and Fire Control Arrowhead) is now being fielded to United States Army and foreign customers. The company also is a major supplier of Electro-Optic systems to the Joint Strike Fighter (JSF), officially known as the F-35 Lightning II. The company has a long history from the Vought years (later half of the 20th Century) of being the number one supplier of missiles and advanced weapon systems to the US Army which continues to this day. Lockheed Martin Missiles and Fire Control Lockheed Martin Missiles & Fire Control (LM MFC) is a Lockheed Martin business unit based in the Dallas suburb of Grand Prairie,
Lockheed Martin F-35 Lightning II for transonic roll-off (wing drop). The possible obsolescence of stealth technology was also criticized. The single-engined F-35 closely resembles the larger twin-engined Lockheed Martin F-22 Raptor, drawing design elements from its sibling. The exhaust duct design was inspired by the General Dynamics Model 200, proposed for a 1972 supersonic VTOL fighter requirement for the Sea Control Ship. Although several experimental designs have been developed since the 1960s, such as the unsuccessful Rockwell XFV-12, the F-35B is to be the first operational supersonic STOVL stealth fighter. Acquisition deputy to the assistant secretary of the Air Force, Lt. Gen. Mark D. "Shack"