The Lockheed F-117A Nighthawk had an RCS of.01. Its profile was reduced by its unique "cut diamond" architecture, which used thousands of flat surfaces, angled so as not to share a common reflective angle with other surfaces. The RCS was further cut by the material used in the plane's construction. Only ten percent of the airframe's weight was metal: the rest was reinforced carbon fiber that absorbed and dissipated radar energy as well as the F-117A's infrared reading, and Fibaloy, an outer-skin plastic filled with bubbles and glass fibers that also reduced the RCS reading.

The black aircraft was fifty-six feet long, sixteen feet high, and had a wingspan of forty feet. Operational since October 1983, the F-117A was assigned to the 4450th Tactical Group at Nellis AFB, Nevada; the Team One Furtim Vigilans unit-- "Covert Vigilantes"-- was permanently based at "the Mellon Strip" there, located in the northwest section of the Nellis Test Range. Since Desert Storm, however, planes from the unit had been much on the move. Its wings folded, the F-117A could be tucked into the body of a C-5A transport, which was the only way it could be moved long distances undetected, since the refueling receptacle would be picked up by radar if used in-flight.

Flying at a top speed of Mach 1, the Nighthawk could cover fifty miles in four minutes. Powered by two 12,500-pound GE F404-HB nonafterburning turbofans, it had a combat radius of four hundred miles.

The F-117A was onboard the aircraft carrier Halsey, which had sailed north from the Philippines at Defcon 4 and was deep in the East China Sea. Taking off and heading due north, lights out, the F-117A shot up along the west coast of South Korea, climbing all the while, and angled northwest into the Yellow Sea. Flying at just ten thousand feet, it accelerated from Mach 8 to Mach 1 and tore into North Korean airspace, its backswept wings and upright swallowtail fins slicing the air with imperceptible resistance.

Radar picked up a blip at once. The radar technician called over a superior, who confirmed that the blip seemed like an aircraft. He radioed the command center. The process took seventy-five seconds. The base commander was wakened and authorized an alarm to be sounded. Exactly two minutes and five seconds had passed since the blip was first spotted.

The air base was surrounded by guns on four sides, though only the antiaircraft artillery on the east and west were manned to catch the intruder coming and going. Twenty-eight men were sent out, seven to a gun, two guns on each side; it took them one minute twenty seconds to get to their posts. One man at each gun slipped on earphones. Another five seconds.

"Southwest gun to tower," said one. "What is the reading on the intruder?"

"We've got it at 277 degrees, dropping fast, closing at a speed of--"

There was an explosion in the distance as the Night-hawk's ABM-136A Tacit Rainbow antiradiation drone missile tracked, found, and destroyed the radar dish.