He took the iodine and the ammonia into the gun designer's washroom. With the butt of his Nambu pocket pistol he crushed the iodine crystals on the marble washstand and brushed the resultant powder into a shaving mug. He wiped the gun clean with the washroom towel, leaving a purplish smear on the cloth. Then he poured ammonia onto the iodine powder, stirring with Langner's toothbrush until he had a thick paste of nitrogen iodide.
He propped open the lid of the grand piano, reached into the narrow end farthest from the keyboard, and smeared the paste on the closely bunched strings. After it dried, the explosive concoction would become unstable and extremely sensitive to impact. A gentle vibration would set off a loud bang and a flash. Alone, the explosion would damage little beyond the piano. But as a detonator, it would be deadly.
He placed the silk sack on top of the cast-iron frame, immediately above the strings. The sack contained enough Cordite MD smokeless powder to propel a twelve-pound shell two miles.
YAMAMOTO KENTA LEFT the Gun Factory the way he had entered, his eyes still stinging from the ammonia. Suddenly, things went wrong. The North Railroad Gate was blocked by an unexpected burst of late-night activity. Switch engines were huffing gondola cars in and out, attended by a horde of brakemen. He retreated deeper into the arsenal, past the powerhouse, through a maze of roads, buildings, and storage yards. Orienting himself by the powerhouse smokestacks and a pair of experimental radio-antenna towers silhouetted against the moonlit sky, he crossed a park and gardens bordered by handsome brick houses in which slept the families of the commandant and officers of the yard.
The ground rose higher here. To the northwest he glimpsed the Capitol looming over the city. He saw it as yet another symbol of America's fearsome might. What other nation could have erected the largest cast-iron dome in the world at the same time they were fighting a bloody Civil War? He was almost to a side gate when a sentry surprised him on a narrow path.
Yamamoto had just enough time to back into a hedgerow.
His capture would disgrace Japan. He was ostensibly in Washington, D.C., to help catalog the recent contribution of the Freer Collection of Asian art to the Smithsonian Institution. The front allowed him to mingle with the Diplomatic Corps and powerful politicians, thanks to their wives who fancied themselves artists and hung on his every word about Japanese art. Genuine experts at the Smithsonian had caught him off base twice already. He had blamed gaps in his hastily learned knowledge on a poor command of English. So far, the experts accepted the excuse. But there would be absolutely no plausible explanation for a Japanese curator of Asian art caught prowling the Washington Navy Yard at night.
The watchman came up the path, boots crunching on gravel. Yamamoto backed in deeper, drawing his pistol as a last resort. A gunshot would rouse Marine guards from their barracks at the main gate. Deeper he pushed, feeling for an opening in the branches that would lead out the other side.
The watchman had no reason to look into the hedgerow as he plodded by. But Yamamoto was still pushing backward against the springy branches, and one snapped. The watchman stopped. He peered in the direction of the sound. In that instant the moon bathed both their faces.
The Japanese spy saw him clearly-a retired sailor, an old salt, supplementing his meager pension with a night watchman's job. His face was leathery, his eyes bleached by years of tropical sunlight, his back stooped. He straightened up at the sight of the slender figure hiding in the hedge. Suddenly galvanized, the pensioner was no longer an old man who should have called for help but was hurled back to his time as a long-limbed, broad-shouldered blue jacket in the full tide of life. A strong voice that once carried to the mast tops demanded, What the devil are you doing in there?
Yamamoto wormed out the back of the hedge and ran. The watchman pushed into the hedge and got tangled in it and roared like a bull. Yamamoto heard answering shouts in the distance. He changed course and raced along a high wall. It had been raised, he had learned while preparing for his tour, after looters invaded when the Potomac River flooded the yard. It was too high to scale.
Boots pounded on gravel. Old men shouted. Electric flashlights flickered. Suddenly he saw salvation, a tree standing near the wall. Digging his india-rubber crepe soles into the bark, he shinnied up the trunk to the lowest branch, climbed two higher, and jumped onto the wall. He heard shouts behind him. The city street below was empty. He jumped down and cushioned a hard landing with flexed knees.
AT BUZZARD POINT, near the foot of 1st Street, Yamamoto boarded an eighteen-foot motorboat powered by a two-horse Pierce Noiseless. The pilot steered into the current and down the Potomac River. A shroud of surface mist finally closed around the boat, and Yamamoto exhaled a sigh of relief.
Huddling from the cold in the cubby under the bow, he reflected upon his close call and concluded that his mission had suffered no damage. The garden path where the night watchman had almost caught him was at least a half mile from the Gun Factory. Nor did it matter that the old man had seen his face. Americans were contemptuous of Asians. Few could distinguish between Japanese and Chinese features. Since immigrants from China were far more numerous than those from Japan, the watchman would report an intrusion by a despised Chinese-an opium fiend, he thought with a relieved smile. Or, he chuckled silently, a nefarious white
