“‘Dmitri Platov’ is being watched by Bell’s detectives. He may have to suddenly disappear.”

Josephine untied the last tie-down, jumped up on the soapbox, and scrambled onto her machine, desperate to get up in the air. The train of her wedding dress tangled in a stay. “Knife!” she yelled to a detective-mechanician, who flicked open a sharpened blade and slashed the train off her dress.

“Keep it out of the propeller!” she ordered, and the mechanician dragged it away. Marco was still standing on the soapbox, his whiskered face inches from hers. “What about you?” she asked.

“I’ll be back. Don’t worry.”

She plunged her control post forward and pulled it back and tilted it sideways, checking that her elevator, rudder, and alettoni moved properly. “O.K., I won’t. Get out of my way. . Contact!”

She raced off the ground ten minutes behind Stevens.

Isaac Bell was already circling the field, having instructed Andy Moser to keep the motor warm and gas and castor oil topped off. From high in the air, he saw the North Side Coliseum, and all of Fort Worth, as a dull glow lost in the infinite sea of darkness that was the night-blackened Texas rangeland.

Josephine raced west, following the railroad tracks by the light of the moon.

The tall detective was right behind her, tracking the aviatrix by the pinprick of fire that marked her Antoinette’s exhaust. For the first ten miles, he kept slowing his engine so as not to overtake her. But when the glow of Fort Worth had completely disappeared, and the ground was as dark behind as it was ahead, he fixed his eyes on the double line of moonlit steel, took his finger off the blip switch, and let the Eagle fly.

HARRY FROST THOUGHT he heard something coming from the east. He saw no glow of a locomotive headlamp. But he knelt anyway and pressed his good ear to the cold steel rail to confirm that it was not a train. The track transmitted no tuning-fork vibration.

Dave Mayhew hunched over his telegraph key. It was he, eavesdropping on the railroad dispatchers, who had suddenly reported the startling news that several flying machines had ascended from Fort Worth in the dark. The blushing bride Josephine’s was among them.

“This time,” Harry Frost vowed in grave tones that chilled the hard-bitten Mayhew to the bone, “I’ll give her a wedding night she will never forget.”

He had been watching the eastern sky for nearly an hour, hoping to see her machine silhouetted against first light. So far, nothing. Still dark as a coal mine. Now he was sure he heard a motor.

He turned left and called into the dark, “Hear me?”

“Yes, sir, Mr. Frost.”

He turned right and shouted again.

“Yes, sir, Mr. Frost.”

“Get ready!”

He waited for a return shout, “Ready!” turned to his right, shouted again, “Get ready!” and heard, “Ready!” back.

Sound carried in the cold night air. He heard the distinctive metallic snick when, to either side of him, the machine gunners levered open their Colts’ action to chamber their first rounds.

There were three men on each gun, knee-deep in rainwater left by the evening storms: a gunner, a feeder to the gunner’s left guiding the canvas belt of cartridges, and a spotter with field glasses. Frost kept Mike Stotts standing by to run with orders if they couldn’t hear him.

The noise grew louder, the sound of a straining machine. Then Frost distinguished the clatter of not one but two motors. They must be flying very close to each other, he thought. Too close. Something was wrong. Suddenly he realized that he was hearing two poorly synchronized engines driving Steve Stevens’s biplane. Stevens was in the lead.

“Hold your fire! It’s not her. Hold your fire!”

The biplane passed over, motors loud and ragged, flying low so the driver could see the rails. Josephine would have to fly low, too, making her an easy target.

Ten minutes elapsed before Frost heard another machine. Once again, he saw no locomotive light. Definitely an aeroplane. Was it Josephine? Or was it Isaac Bell? It was coming fast. He had seconds to make up his mind. Bell usually flew behind her.

“Ready!”

“Ready, Mr. Frost.”

“Ready, Mr. Frost.”

The gunner to his left yelled excitedly, “Here she comes!”

“Wait!. . Wait!”

“Here she comes, boys!” cried the men on his right.

“Wait!”

Suddenly Frost heard the distinctive hollow-sounding blatting exhaust of a rotary motor.

“It’s a Gnome! It’s not her. It’s a Gnome! He’s ahead of her. Hold your fire! Hold your fire! ”

He was too late. The excited gunners drowned him out with long bursts of automatic fire, feeding the ammunition belts as fast as the guns could fire. Spitting brass cartridges and empty cloth, the weapons spewed four hundred rounds a minute at the approaching machine.

ISAAC BELL LOCATED both machine guns by their muzzle flashes, two hundred yards apart to the north and south of the tracks. There was no way the gunners could see him, blinded by those flashes. But they were shooting accurately anyway, aiming at the sound of his motor, firing thunderously, stopping to listen, firing again.

Flying lead crackled as it passed close to the Eagle’s king posts.

Bell blipped the motor off, glided silently, then blipped it on again. The guns caught up and resumed firing. Heavy slugs shook struts behind him. The rudder took several hits, and he felt them kick his wheel post.

Bell turned the Eagle around and flew back up the tracks in the direction from which he had come. Facing east, back toward Fort Worth, he saw the gray glow of first light. His keen eyes detected a dot several miles distant. Josephine was coming at sixty miles at hour. He had two minutes to disable the machine guns before she ran into the clouds of lead they were shooting into the sky. But armed with a single Remington rifle, he was badly outgunned. His only hope was to sow confusion.

He blipped his motor off again, banked, and glided silently to the right. He blipped on. The south gun chattered, tracing the noise of his motor but revealing its position. Bell steered for the flashes, swooped low, and fired his rifle. He blipped off the motor and glided over the machine gun. Well past it, he blipped the Gnome again, roared around, and headed back, flying in line with the guns on a course perpendicular to the tracks.

Both guns, the closer south gun and the north gun on the far side of the tracks, opened a deadly sheet of fire. Bell swooped low over the nearer. By its muzzle flashes, he could see three men had the gun mounted on a light landing carriage, which they wheeled skillfully as he passed to rake him from behind.

Bell dropped under the stream of bullets, so low he could see flashes on the tracks. Harry Frost was firing a shotgun at the Gnome’s brightly flaming exhaust. Bell dropped almost to the ground, practically parted Frost’s hair with his skids, and fired his rifle at the north machine gunners, drawing their attention and causing them to wheel their gun and fire at him continuously. Had they held the trigger any longer, the air-cooled Colt would have burned up. As it was he could see the barrel glowing red-hot. But they stopped firing abruptly and scattered for their lives as their emplacement was hit by a burst from the south gunners, whom Bell had tricked into strafing their opposite position while trying to rake him from behind.