F-117A is built of aluminum and titanium. The flat angles, or facets, help hide the aircraft from radar by reflecting the signal everywhere except back to the radar transmitter/receiver. To aid in it is invisibility the Stealth is covered with Radar Absorbent Material (RAM) which is the matted black finish you see. The F-117A is powered by two General Electric F404-GE-F1D2 engines with 12,000 pounds of thrust each which carry it to an estimated top speed of Mach.0.92. It carries all weapons internally, the most often used being the GBU-27A Paveway III laser-guided bombs.