Raytheon in quick succession Dallas-based E-Systems (1995), Chrysler Corporation's defense electronics and aircraft-modification businesses, which had previously acquired companies such as Electrospace systems (1996) (portions of these businesses were later sold to L-3 Communications), and the defense unit of Texas Instruments—Defense Systems & Electronics Group (1997). Also in 1997, Raytheon acquired the aerospace and defense business of Hughes Aircraft Company from Hughes Electronics Corporation—a subsidiary of General Motors, which included a number of product lines previously purchased by Hughes Electronics including the former General Dynamics missile business (Pomona facility), the defense portion of Delco Electronics (Delco Systems Operations), and Magnavox Electronic
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"