Quite reflexively, as if to demonstrate his control, he put the Vindicator into a.sharp turn. The enjoyment of it, Grady thought, can be only man’s. Machines could probably do it just as well, but they would have no sense of excitement, no pleasure at the beauty of the six planes holding their positions while traveling at high speeds. The outboard planes, with longer sweep to cover, would put on just enough speed to maintain the V-shape.
“Sullivan, how is the group holding formation?” Grady asked over the intercom.
“Perfectly, sir,” Sullivan said instantly. “Even No. 6 is not out of position by more than five yards.”
Grady smiled behind his oxygen mask. He must remember to compliment Flynn, the pilot of No. 6, when they landed. The No. 6 plane labored under a special disadvantage. Although she carried no thermonuclear weapons, the No. 6 plane was, paradoxically, the most heavily laden of any plane in the group.
In every group this was the plane that carried a maximum load of defensive apparatus and devices. It was this plane which could jam the enemy radar gear, receive and analyze and attempt to foil enemy attack, spread decoys throughout the skies, and act, as Grady had always figured in his mind, as a wise but tuskless elephant might do in leading a group of muscular young bulls into action. The No. 6 plane was always flown by specialists who thoroughly understood the incredible intricacy of its weird perceptions, methods of analysis, and means of defense.
Grady moved the yoke and the Vindicator leveled off. The slight strain on his harness relaxed. He glanced around his limited arc of sky and saw it turning from a crystal gray to a deep endless blue. Then he received two signals which made his body go rigid even before his mind understood fully what had happened. In his earphones there was a sudden beeping noise repeated in short staccato bursts. Automatically he looked down at the Fail-Safe box which was installed between him and the bombardier. For the first time in his flying career the bulb on top of the box was glowing red. Then his intellect caught up with his reflexes: this was the real thing. Both he and Thomas looked up from the Fail-Safe box simultaneously. Thomas’ eyes seemed nonchalant. Grady’s response was unhesitating. He reached for the S.S.B. radio switch. This would put him in direct contact with Omaha. It was the Positive Control double-check. mediately, Grady knew, he would hear from Omaha the reassuring “No go.” Something had gone wrong with the Fail-Safe box. It would all be corrected. He flipped on the S.S.B. switch. A loud, pulsating drone filled his ears. No voice signal was possible.
“Request permission, sir, to verify,” Thomas said crisply.
“Permission granted,” Grady said automatically.
To his own ears Grady’s voice sounded small and chilled. He was stunned at the tonelessness in Thomas’ voice, the expressionless look in his eyes.
Grady reached into the map case beside his seat and took out a pure red envelope which bore in black letters the words “Fail-Safe--Procedure March 18.” Thomas was taking out an identical envelope from his map case. As Grady’s fingers tore open the envelope he Looked at the face of the Fail-Safe box. There were six apertures, each of them about an inch square. Always, until this moment, the apertures had been blank. Now in bold white figures there were three letters and three numbers: CAP-SI 1. The Fail-Safe box was an intricate machine made up of a radio receiving device, plus six wheels, each of which contained either all the letters of the alphabet or the numbers from 1 through 9. When the radio receiver within the box was activated by a direct signal put into the machine by the Intelligence officer on each base and unknown to any crew member,
letters and numbers would appear in the aperture.
Grady got his envelope open and took out a thick white 8-by-8-inch card. On the top line was the date and below it were the words and letters CAP-811. He held the card directly over the machine to make sure that he was not mistaken. Thomas, in the meanwhile, had taken out an identical card which he held next to Grady’s. They both confirmed that the machine was showing the correct code sequence for the day.
“Request permission to authenticate on the secondary channel, sir,” Thomas said.
“Permission granted,” Grady said.
Thomas removed a red plastic cover from a dial which was labeled FAIL-SAFE ALTERNATE CRANNEL.
Without a moment’s hesitation he. turned the dial to the right. Instantly the red light and the beeping stopped. The letters and numbers disappeared from the apertures in the Fail-Safe box. Grady scanned the sky again, felt his musdes bulging against the tight harness. His mind was utterly blank. In three seconds the beeping started and the light went on again. The Fail-Safe box was now receiving its signal on a different channel. When Grady looked at the six apertures they again said “CAP-811.” Again Grady held his card directly over the apertures and Thomas held his card next to Grady’s. They checked.
Grady felt a spasm of doubt, a kind of upwelling of disbelief. It had never happened before, it could not be happening now. He thought of alternatives: he could not radio General Bogan at Omaha. He could keep circling at Fail-Safe, hoping for some other form of verification. And then he looked at Sullivan and Thomas. They were looking at him casually, their eyes unblinking and unquestioning. They were innocently implacable.
Grady felt as if his vertebrae had suddenly fused together. His hands did not shake but he felt all bone and muscle and cartilage. He was aware that Thomas was looking at him with something like puzzlement in his exposed eyes.
Grady felt that something had happened to the vital living parts of his body-the heart, brain, eyes, ears, and tongue had died. He felt for a moment that he would not be able to speak. He ordered his tongue to move, to speak the words he knew he must say.
“I read it as CAP-811,” Grady heard his voice say. This was the procedure in which they had been drilled thousands of times, but the voice did not sound like that of Grady. It seemed to come from somewhere in the intercom system, to be a mechanical and inhuman voice.
“I verify your reading as CAP-811,” Thomas said.
“We will now both open our operational orders,” Grady said, and again the voice did not seem to belong to him.
Grady reached down for the envelope in the map case. For a brief second he saw Sullivan looking at him. Again he had the impression of blankness, the eyes without the mouth and with the exposed flesh squeezed tight by mouthpiece and helmet, told nothing. If the masks and helmets were off, Grady thought, would Sullivan’s face be filled with terror? Somehow he doubted it. Sullivan looked back at his tubes and analyzers. Grady began to open the operational plan.
Squarely on the middle of the envelope containing the plan and in small red block letters were the words Top SECRET. In smaller black letters in the lower lefthand corner was a sentence which said TO BE OPENED ONLY AT SPECIFIC ORDERS AND UNDER CURRENT OPERATING INSTRUCTIONS. In the lower right-hand corner were the words DESTROY BEFORE CAPTURE OR ABANDONMENT OF AIRCRAFT. The flap closing the envelope was sealed at three places. The envelope was well designed to accomplish two purposes: it could not be opened without detection, but it could be opened easily.