General LeRoy took over. "You sit at the machine's control console. A helmet is placed over your head. You set the machine in operation. You see the results."

"Yes," Ford went on. "Instead of reading rows of figures from the computer's printer ... you actually see the war being fought. Complete visual and auditory hallucinations. You can watch the progress of the battles, and as you change strategy and tactics you can see the results before your eyes."

"The idea, originally, was to make it easier for the General Staff to visualize strategic situations," General LeRoy said.

"But every one who's used the machine has either resigned his commission or gone insane," Ford added.

The CIA man cocked an eye at LeRoy. "You've used the computer."

"Correct."

"And you have neither resigned nor cracked up."

General LeRoy nodded. "I called you in."

Before the CIA man could comment, Ford said, "The computer's right inside this doorway. Let's get this over with while the building is still empty."