ENOLA GAY
GORDON THOMAS AND MAX MORGAN WITTS
Contents
Illustrations follow
Prologue
ACTIVATION: September 1, 1944, to June 27, 1945
ACCELERATION: June 28, 1945, to August 2, 1945
FISSION: August 3, 1945, to 8:16 A.M., August 6, 1945
SHOCK WAVE: 8:16 A.M. to midnight, August 6, 1945
AFTERMATH: August 7 to midday, August 15, 1945
Epilogue
Appendices
Bibliography
Index
Prologue
On August 2, 1939, a month before World War II began in Europe, Albert Einstein signed a letter addressed to President Franklin Delano Roosevelt. Couched in careful terms, the letter stated that recent nuclear research indicated “extremely powerful bombs of a new type,” based on uranium, might soon be possible. Einstein warned that secret work with uranium was going on in Nazi Germany. He urged that similar American research be accelerated.
Alexander Sachs, economist, financier, and friend of Roosevelt, agreed to deliver the letter to the president. Before he could do so, war in Europe broke out, and Roosevelt was unable to see him until mid-October. Then, after much persuasion by Sachs, Roosevelt marked Einstein’s letter for action.
The first result of the president’s decision was the expenditure of just six thousand dollars. It bought graphite, essential for one of the early experiments that would, in time, lead to the atomic bomb. Substantial funds for the specific purpose of producing such a bomb were first authorized by Roosevelt on December 6, 1941.
Next day came Pearl Harbor. Roosevelt vowed vengeance. “Remember Pearl Harbor” became the rallying cry.
By the summer of 1942, it was clear that enormous amounts of money and effort would be required to build an atomic bomb. Huge manufacturing and processing plants had to be erected in remote areas to produce the sometimes dangerous materials required; research work in widely scattered university and commercial laboratories had to be initiated and put on a wartime footing; new laboratories needed to be created. And all in the utmost secrecy.
A cover name was invented for the project: the Manhattan Engineer District, later simplified to the Manhattan Project.
In October 1942, Site Y, Los Alamos, in the New Mexico desert, was chosen by physicist J. Robert Oppenheimer, a former pupil at the Los Alamos Ranch School for Boys, for his key research laboratory. His old classrooms would come to be used by eminent scientists, among them Enrico Fermi, Edward Teller, and that other giant of European physics, Niels Bohr.
It was Fermi who masterminded the crucial experiment on December 2, 1942, that produced the chain reaction needed to make an atomic bomb. He conducted his experiment on a bitterly cold day in an unused squash court at the University of Chicago. There were fears that the city itself might be endangered by the nuclear energy released. But the reaction was controlled, and scientists had demonstrated that when a uranium atom splits, it releases neutrons which can themselves then split more uranium atoms, creating the chain reaction. They formally christened this process “The K Factor”; among themselves they called it “The Great God K.”
In secret war plants during the following months a sense of urgency hovered over the complex processes for producing the relatively small amounts of uranium 235 needed to make atomic bombs. Plutonium, also suitable for atomic weapons, was being produced as well.
Roosevelt backed the project without the knowledge of Congress or the electorate. Funds for the venture were disguised in the federal budget. Eventually, two billion dollars would be spent in financing the work.
By 1944, a deep division was brewing among the scientists. Those now opposed to the military use of their research included Niels Bohr, who, in late August 1944, asked Roosevelt to authorize the sharing of U.S. atomic secrets with the world’s scientific community. He believed science belonged to the world.
At about the same time during the summer of 1944, uranium 235 was beginning to be produced in the quantities required for a weapon. Success seemed in sight. The problem of how to enclose “The Great God K” in a bomb casing was being dealt with. If, despite the qualms of some of the scientists, work was to go forward, the time had come to choose the man to train and lead the men who would drop the bomb.
Activation
SEPTEMBER 1, 1944,
TO JUNE 27, 1945
1
The commanding general of the Second Air Force, Uzal G. Ent, looked up as Colonel John Lansdale of U.S. Army Intelligence led Paul Tibbets into his office.
He glanced inquiringly at the intelligence officer.
Lansdale nodded.
General Ent then introduced the two men seated beside his desk. One was U.S. Navy Captain William “Deak” Parsons, whom he described as an “explosives expert” but who was, in fact, one of the most influential men in the Manhattan Project; the other was a civilian, Professor Norman Ramsey, a twenty-nine-year-old Harvard physicist.
Lieutenant Colonel Paul Tibbets was struck by Ramsey’s comparative youth; he had always associated scientists with gray hair and stooped shoulders. To Tibbets, the two men looked fit enough to fly combat, even if Parsons’s baldness made him appear older than his forty-four years. And it seemed strange that this naval captain should be involved in what appeared to be an Army Air Force meeting.
“Have you ever heard of atomic energy?” Ramsey had the firm, incisive voice of a natural tutor.
“Yes,” said Tibbets.
“How?”
“I majored in physics, so I know the atomic scale.”
There was an expectant pause.
“What do you know of the present situation in the field?” asked Parsons.
Tibbets looked at General Ent. There was no encouragement there. A few days earlier, when Ent first became aware of the Manhattan Project, he himself had been warned he would be court-martialed if any leak of information were traced to him. Tibbets looked to Lansdale, who gave a barely perceptible nod.
As confidently as he could, Tibbets began to speak. He understood there had been some experimenting by the Germans to try to make heavy water so that they could split the atom.
“Good.” Ramsey’s gentle praise was more suited to the campus than the bleak office of a fighting general. He paused, weighing his words, a mannerism Tibbets would come to recognize.
Ramsey continued. “The United States has now split an atom. We are making a bomb based on that. The bomb will be so powerful that it will explode with the force of twenty thousand tons of conventional high explosive.”
General Ent then told Tibbets he had been chosen to drop that bomb.
It was September 1, 1944. The place was U.S. Army Second Air Force Headquarters, Colorado Springs.
Only moments before this conversation, Lansdale had led Tibbets into the cloakroom adjoining General Ent’s office. There, Lansdale had asked Tibbets a highly personal question.
Tibbets had given no visible reaction. Nevertheless, he was stunned. How did this stranger know of that private event of ten—or was it twelve—years ago; an experience of such a passing nature that he himself could not now exactly remember its date? Why had Lansdale been probing something that had happened all those years back?
Tibbets recognized that this assault upon his privacy, his sense of self-respect, was calculated. But how should he cope with it?
He knew that Lansdale’s question had nothing directly to do with military intelligence. Therefore, he would be perfectly justified in not answering. Then he could walk out, unchallenged, through one of the two doors in the cloakroom. That door would return him to the conventional military world where nobody would dare ask such an intimate question of a much-decorated war hero.
Tibbets decided to tell the tr
uth. “Yes. I was once arrested by the police in North Miami Beach.”
“What for?”
“The chief of police at Surfside caught me in the back of an automobile … with a girl,” confessed Tibbets.
The rest took little telling—his arrest, a spell in the cells, the intervention of a judge who was a family friend, the indiscretion hushed up.
By admitting the truth about the backseat dalliance with a girl whose name he now had difficulty recalling, Paul Tibbets had assured himself of a place in history. Within a year his name would become forever linked with the destruction of Hiroshima, a Japanese city he was yet to hear of.
Until three days earlier, on Tuesday, August 29, 1944, Tibbets had not been considered for the task. Then, late in the afternoon, General Barney Giles, assistant chief of air staff, decided to replace an earlier nominee with Tibbets. Lansdale, one of the less than one hundred men who knew what the Manhattan Project was meant to do, immediately supervised the most thorough investigation of Tibbets, staging the cloakroom meeting as the climax.
Lansdale’s question about a teenage sexual peccadillo was intended as the final test of Tibbets’s character. If he told the truth, he was in. Lansdale was satisfied.
In General Ent’s office, Ramsey and Parsons gave Tibbets a thorough briefing on the history and problems associated with building America’s first atomic bomb. Then Lansdale took over.
“Colonel, I want you to understand one thing. Security is first, last, and always. You will commit as little as possible to paper. You will tell only those who need to know what they must know to do their jobs properly. Understood?”
“Perfectly understood, Colonel.”
General Ent concluded the meeting by formally assigning the 393rd Heavy Bombardment Squadron, based in Nebraska, to Tibbets. Its fifteen bomber crews would provide the world’s first atomic strike force, capable of delivering nuclear bombs on Germany and Japan. Their training base would be at Wendover, Utah. The code name for the air force’s part of the project would be “Silverplate.”
Tibbets briefly wondered who had chosen such a homely name for a weapon “clearly designed to revolutionize war.” Even so, he still could not accept that one bomb dropped from a single aircraft could equal the force of twenty thousand tons of high explosive. Ordinarily, some two thousand bombers would be required to deliver such a payload.
But he had more pressing problems to deal with. He must gather together some of the trusted men who had served with him before; he must inspect Wendover; he must devise a training program; finally, he must be prepared to work alongside “a bunch of civilians who would give me a glimpse of Pandora’s box.”
As Tibbets was leaving the office, General Ent stopped him.
“Colonel, if this is successful, you’ll be a hero. But if it fails, you’ll be the biggest scapegoat ever. You may even go to prison.”
2
Tibbets was a stocky, medium-sized man with a crisp, detached manner. It would have been hard to guess that he was one of America’s most successful bomber pilots; a combat veteran who had flown the first B-17 across the English Channel on a bombing mission in World War II; who had piloted General Dwight D. Eisenhower and General Mark Clark to Gibraltar to plan the Allied invasion of North Africa; who had taken Clark on to Algiers, landing on a field being bombed and strafed. Tibbets later led the first American raid on North Africa. Returning to the United States, he took charge of flight-testing the new B-29 Superfortress at a time when the bomber was thought too dangerous to fly; it had killed its first test pilot. Tibbets was courageous, used to command, able to give and execute orders with speed and efficiency.
Some people, though, found him difficult to work with. He did not suffer fools, and, by his own standards, there were many fools. Restrained and reticent, Tibbets appeared the paragon of service correctness. Few knew he concealed his sensitivity by steely control, that behind his outward appearance was a shy man who had suffered acutely the loss of any of his fliers in action. All that invariably showed on his face was a pleasant, noncommittal intelligence.
Tibbets was born in Quincy, Illinois, in 1915. His father, a wholesale confectioner, was a strict disciplinarian who severely punished the slightest infringement of the many rules which hedged in his son’s formative years. Paul’s mother, Enola Gay, was as gentle as her unusual forenames. She adored her only son and strongly opposed her husband’s decision to send Paul, at the age of thirteen, to the Western Military Academy at Alton, Illinois. Afterward, it was his mother who first encouraged him to be a doctor, and later, against strong family opposition, to join the U.S. Army Air Corps; she quietly accepted Paul’s wish to abandon medicine in favor of flying. But in those difficult post-Depression days a military career was not viewed with great favor in the middle-class community of which Paul Tibbets’s father was a pillar. When his son enlisted in 1937, his father’s last words on the subject were, “You’re on your own.” His mother had said, “Son, one day we’re going to be real proud of you.” She reminded him always to “dress neatly,” never to promise more than he could do, and always to tell the truth.
It was because Tibbets had followed her advice that he was able, in such unlikely surroundings, to answer truthfully Lansdale’s intimate question.
3
When Brigadier General Leslie Groves took command of the Manhattan Project, he was answerable only to Secretary of War Henry Stimson and, through him, to President Roosevelt.
Both knew more about this man with old-fashioned manners than they did about any other serving officer. An FBI check—the only occasion the bureau became involved in the atomic project—turned up Groves’s passion for candy, his concern about middle-age spread, his mean tennis playing, his ability to solve complicated mathematical problems while eating. The probe revealed Groves was known as “Greasy” at West Point, that he had few interests outside his work, that he was stable and happily married.
Stimson also knew his professional background: an outstanding West Point engineering graduate who had helped build the Pentagon; a man reputed to be the “best barrack-builder in the Army.”
His service record showed Groves to be a corner-cutter, a dimesaver, tough, tireless, and resilient. He was used to working to time and budget. He got things done. Although he tended both to ruffle the tempers of his equals and inspire fear in his subordinates, Groves seemed to Stimson and Roosevelt the best possible choice to run the world’s biggest-ever military project.
From the outset, Groves worked a fifteen-hour day, seven days a week. He gave up tennis and put on weight, sustaining himself with pounds of chocolates which he kept locked in the safe where he also stored the project’s most important secrets.
But Groves was not just a builder going from site to site with a bag of candy in his pocket. Even his friends in the project—and they numbered few—believed, in the words of one, that Groves “not only behaves as if he can walk on water, but as if he actually invented the substance.” Another, less cruel, claimed “he has the most impressive ego since Napoleon.”
Forty-eight years old, with a vocabulary capable of blistering a construction worker—though many found more unnerving his deep sigh at a piece of misfortune—Groves came from the same mold as MacArthur and Patton.
Ultimately, nobody could withstand his barrage of orders and demands. Opposition was crushed and arguments he regarded as pointless ended with a crisp “Enough.” He drafted industrial tycoons as if they were buck privates, and drove his work force to exhaustion as he built and ran his empire.
Bullying, cajoling, bruising, buffeting, occasionally praising, and rarely apologizing, Groves had achieved a feat he himself had once thought impossible. In two years he had brought the atomic bomb from the blueprint stage to the point where it would soon be ready for testing.
Groves would allow no one to stop that momentum.
He had approved the choice of Tibbets as the commander of the special atomic strike force because he had all the professional qualitie
s Groves believed were needed to get the job done.
Working from a temporary office in the Pentagon, Tibbets was coming to realize, a week after the meeting in Colorado Springs, just how vast his powers were as commander. He could demand anything he wanted, merely by mentioning the code name Silverplate. Using that prefix, he had instituted a search for some of the men who had served with him in Europe, North Africa, and on the B-29 testing and training program. Some had already been traced and were on their way to Wendover in Utah; others were having their orders cut.
Here, at the Pentagon, General Henry Arnold, chief of the Army Air Force, had said, “Colonel, if you get any trouble from anybody, you can call on me.”
Arnold had designated two senior officers to serve as liaison with Tibbets when he got to Wendover. Arnold’s order to them was simple. “Just give him anything he wants without delay.”
Tibbets had stopped at Wendover on his way from Colorado Springs to Washington. He found it “the end of the world, perfect.” It was close enough to Los Alamos by air, an important consideration, for Ramsey had warned him that “the scientists will be bugging you day and night.” It was only some five hundred miles by air from the Salton Sea area in Southern California, an ideal bombing range. The location of Wendover would simplify security. The existing facilities on the base were suitable for immediate occupancy.
He knew his men would hate the place.
But he planned to work them so hard that they would not have time to dwell on their surroundings.
By now, Tibbets had surmised there were only two possible targets for him to bomb: Berlin or Tokyo. He thought the Japanese capital more likely; the war in Europe was already approaching a decisive stage.
If it was to be Japan, then he would need a base within striking distance of the Japanese home islands.
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