the missile guidance system was tracking the indicated target.

He hesitated again. His body tautened against the straps holding it in the acceleration couch. His right arm became rigid; his fingers petrified. Then, with a convulsive twitch of his thumb, he closed the firing circuit. He stared at the screen, unable to tear his eyes from the streak of light that leaped away from his ship and toward the target. The missile reached the target, and there was a small flare of light. His radiation counter burped briefly. The target vanished from the radar, but the infrared detector insisted there was a nebulous fog of hot gas, shot through with a rain of molten droplets, where the target had been. That was all. He had destroyed the enemy warhead without setting it off. He stabbed the MISSION ACCOMPLISHED button, and flicked the red-handled toggle switch, resigning his status as pilot. Then he collapsed, nerveless, into the couch.

The autopilot returned to control. It signaled the Air Defense network that this hostile track was no longer dangerous. It received instructions about a safe corridor to return to the ground, where it would not be shot at. As soon as the air was thick enough for the control surfaces to bite, the autopilot steered into the safe corridor. It began the slow, tedious process of landing safely. The ground was still a long way down. The kinetic and potential energy of the ship, if instantly transformed into heat, was enough to flash the entire ship into vapor. This tremendous store of energy had to be dissipated without harm to the ship and its occupant.

Major Harry Lightfoot, fighter pilot, lay collapsed in his couch, exhibiting somewhat less ambition than a sack of meal. He relaxed to the gentle massage of his gee-suit. The oxygen control winked reassuringly at him as it maintained a steady flow. The cabin temperature soared, but he was aware of it only from a glance at a thermometer; the air conditioning in his suit automatically stepped up its pace to keep him comfortable. He reflected that this might not be so bad after all. Certainly none of his ancestors had ever had this comfortable a ride home from battle.

After a while, the ship had reduced its speed and altitude to reasonable values. The autopilot requested, and received, clearance to land at its preassigned base. It lined itself up with the runway, precisely followed the correct glide-path, and flared out just over the end of the runway. The smoothness of the touchdown was broken only by the jerk of the drag parachute popping open. The ship came to a halt near the other end of the runway. Harry Lightfoot disconnected himself from the ship and opened the hatch. Carefully avoiding contact with the still-hot metal skin of the ship, he jumped the short distance to the ground. The low purr of a motor behind him announced the arrival of a tractor to tow the ship off the runway.

"You'll have to ride the tractor back with me, sir. We're a bit short of transportation now."

"O.K., sergeant. Be careful hooking up. She's still hot."

"How was the flight, sir?"

"No sweat. She flies herself most of the time."

THE END