A Chicago priest had manufactured the bulletproof vest of multiple layers of silk specially woven in Austria. Frost had invested secretly in the enterprise and owned shares in the company formed to market the inch-thick garment. The Army had rejected it for being too heavy and too hot. Frost’s weighed thirty-six pounds, a negligible burden for a man of his size and strength. But it was undeniably hot. On the short walk from the train he was wiping his brow with a handkerchief. But it was worth the discomfort, as it would stop modern high-velocity, smokeless-powder slugs fired from revolvers and pistols.

He had been disappointed when he shot at Marco Celere long-range. He had missed seeing the betrayer’s fear as he died. Didn’t even get to see the body. He’d do it up close, this time, and squeeze the life out of Josephine with his bare hands.

He stayed within the crowd lining up to buy tickets, then shuffled among them toward the grandstand. He knew she was here because the incessantly buzzing, droning motors overhead told him they were practicing today. The wind was light, so a dozen machines were up in the sky. Josephine would be either flying or in the infield adjusting and tuning the machine that Preston Whiteway had bought for her.

He had to hand it to the race organizers, they knew their business. With weeks to go before the starting day, they had convinced fifty thousand people to ride out to Nassau County and pay twenty-five cents each to watch the birdmen practice. The aviators weren’t racing around pylons or trying to set altitude records—none of the usual exhibitions of soaring, diving, and altitude climbing expected at flying fairs—just buzzing about in the air when they felt like it. But the stands were noisy with men and women cheering their heads off, and Frost could tell by the awe on their faces and their ceaseless “ooohhhs” and “aaahhhs” why they paid their quarters. The sight of enormous machines held up by invisible forces took the breath away. They weren’t as fast as locomotives and racing cars, but it didn’t matter. Big as they were, they hung in the blue like they belonged there.

Suddenly he saw her!

Josephine came streaking down from the sky like a yellow sword. There was no mistaking her machine. It was painted that same damned Whiteway Yellow that the born-with-a-silver-spoon-in-his-mouth sissy boy had trademarked.