The first 757 ever built was modified to flight-test the highly advanced integrated avionics developed for the F-22 Raptor. The test bed has reduced risk as well as future flight test hours by enabling extensive in-flight testing, evaluation and troubleshooting before much of the avionics were installed on the F-22. The test avionics are operated from a simulated F-22 cockpit installed in the cabin. The cockpit has primary and secondary F-22 displays, as well as a throttle and stick. There is room on the aircraft for up to 30 software engineers and technicians who can evaluate the avionics, identify anomalies and, in some cases, resolve problems in real time. Additional modifications to the 757 include installation of an F-22 radar housed in the forward fuselage section of the nose of the plane, and installation of a sensor wing on the crown of the plane immediately behind the flight deck.