to that of the B-2 armed with bombs. The design could also have been adapted to use a more powerful engine, such as the F-35 Lightning II's Pratt & Whitney F135, or the General Electric/Rolls-Royce F136. While an early FB-22 concept featured no tailplanes, the design incorporated twin tailplanes and likely would have fixed engine nozzles as opposed to the thrust vectoring nozzles on the F-22. The FB-22 was to have a maximum speed of Mach 1.92. Because the aircraft was to emphasize air-to-ground capability while maintaining stealth characteristics, the FB-22 would have lacked dogfighting capability. One aspect that arose during the early stages of the design process was the consideration that Boeing would be responsible for the final assembly of the aircraft. At the time, Lockheed Martin was making the mid-fuselage at its plant in Fort Worth, Texas, while assembling the F-22 in Marietta, Georgia. However, since Boeing was responsible for the manufacturing of parts of the fuselage and more crucially, the wings—as well as integrating the avionics—it was considered prudent to give final assembly to Boeing. Other than the wings, the aircraft would have retained much of the design of the F-22. This included 80% of the avionics, software, and flight controls. This commonality would have also significantly reduced the costs of software integration. In February 2003, during a session with the House Committee on Armed Services, Air Force Secretary James Roche said that he envisioned a force of 150 FB-22s would equip the service. In 2004, Lockheed Martin officially presented the FB-22 to the Air Force to meet its requirement for a potential strategic bomber as an interim solution to become operational by 2018. Because of the work already done on the F-22, the cost of developing the FB-22 was estimated to be as low as 25% of developing a new bomber, with development expected to be US$5–7 billion (2002 dollars), including the airframe cost of US$1 billion (2003 dollars). It was later revealed that six different versions of the bomber were submitted, as targets, payload and range had yet to be defined. In addition, as a stealth bomber, the FB-22 was designed to carry weapons externally while maintaining stealth with the assistance of detachable and faceted pods dubbed "wing weapons bay"; previously, an aircraft could only remain stealthy if it carried its weapons internally. However, the FB-22 in its planned form appears to have been canceled