The noon crowd filled the dining hall with noise until Major General Robert Hayes spotted Sergeant Claire Morgan.

The firefight in the maintenance tunnels of the Old Naval Observatory lasted less than ninety seconds, but it was fought with the frantic, deadly ferocity of a close-quarters ambush.

When the heavy steel door of the boiler room was kicked off its latch, Vance didn't wait for the intruders to clear the threshold. He fired three controlled bursts through the wood-and-plaster partition, driving the lead point-man back into the stairwell with shattered ceramic trauma plates.

Miller moved through the smoke like a ghost, his sidearm barking twice in rapid succession. A mercenary wearing sterile black fatigues fell backward down the concrete steps, his weapon clattering into the darkness below.

"Morgan! Move!" Vance bellowed, providing continuous suppressing fire down the hallway.

Claire sprinted across the oil-slicked concrete floor, the Pelican case tucked tightly against her ribs like a football. A ricochet struck the brickwork three inches from her ear, showering her hair with white lime dust and burning powder. She didn't slow down. When she reached the hydraulic lift at the end of the supply trench, she spun around, leveled her service weapon with both hands, and engaged a silhouette emerging from the steam pipes.

Two shots to center mass. The figure collapsed into the shadows.

"Lift is active!" Claire shouted, hitting the yellow emergency cycle switch with the heel of her palm.

The industrial steel platform groaned, rattling upward through the vertical shaft toward street level. Vance and Miller scrambled onto the moving grate just as a hail of submachine-gun fire chewed through the floorboards beneath their feet.

Seconds later, the lift slammed into the upper loading dock behind the Navy Annex. The morning sun was just beginning to cut through the heavy gray smog of Washington, D.C., casting long, amber fingers of light across the damp asphalt.

Waiting at the curb was not an unmarked van, but an olive-drab, heavily armored M1151 Up-Armored Humvee belonging to the District of Columbia National Guard. Behind the wheel sat Master Sergeant Marcus Vance Jr.—the Four-Star’s nephew.

"Get in!" the young sergeant yelled, leaning across the passenger seat to kick the heavy ballistic door open. "Metro Police have dispatch reports of an active shooter at this grid! We have about three minutes before every federal cruiser in the District converges on this block!"

Claire threw the Pelican case into the footwell, dove into the rear seat, and hauled Vance in after her. Miller slammed the heavy armored door shut just as the engine roared to life, the four massive run-flat tires biting into the pavement with a scream of torque.

The Humvee launched forward, bouncing off the curb and rocketing down Constitution Avenue toward Capitol Hill.

Inside the rattling, steel-encased interior, Claire checked the Pelican case. The reinforced polymer was scored by shrapnel, but the digital display on the cryptographic seal still glowed green.

"Integrity verified," Claire said, wiping a mixture of sweat and brick dust from her forehead.

"Look at your phone," Miller said, staring at the screen of his tactical tablet.

Claire pulled her government-issued smartphone from her pocket. The lock screen was inundated with automated notifications from the Defense Information Systems Agency.

*ALERT: ALL PERSONNEL ARE DIRECTED TO REPORT THE LOCATION OF SGT CLAIRE MORGAN, US ARMY. SUBJECT IS CURRENTLY DESIGNATED ARMED AND DANGEROUS UNDER UCMJ ARTICLE 85 (DESERTION).*

"Desertion?" Claire let out a short, incredulous laugh. "They're declaring me a deserter to justify a shoot-on-sight order."

"Hayes is desperate," Vance said, leaning his head back against the steel headrest, breathing heavily. His knuckles were raw and bleeding from the fight in the stairwell. "He knows that once your testimony is delivered before the Senate Armed Services Committee on the record, the Department of Justice will have no choice but to appoint a Special Prosecutor. When a Two-Star General goes down for corporate fraud, everyone who took his money goes with him: Cross, the procurement directors, the regional testing heads, and the board of Vanguard Global."

"Look ahead," the driver shouted through the ballistic glass partition. "We’ve got a roadblock at the base of the Hill!"

Claire leaned forward between the front seats.

Three hundred yards ahead, at the intersection of Constitution Avenue and 1st Street, half a dozen black federal law enforcement cruisers were parked bumper-to-bumper, forming an impenetrable wedge across the lanes. Uniformed officers from the Federal Protective Service stood behind their open doors with shotguns and carbines leveled at the oncoming Humvee.

Standing in the center of the road, holding an electronic bullhorn, was Deputy Assistant Secretary Leonard Cross.

"Marcus," Vance leaned forward, placing a hand on his nephew's shoulder. "Do you see that curb on the northern perimeter of the Capitol lawn?"

"Sir, that’s a pedestrian sidewalk," the young sergeant replied, his eyes wide.

"It’s reinforced turf designed to support emergency vehicles," Vance said calmly. "Punch through the decorative shrubs, clear the plaza fountain, and drop us directly at the steps of the Dirksen Building."

"Hold on to your teeth," the driver said.

The heavy Humvee swerved violently to the left, mounting the curb with a bone-jarring crash that obliterated a decorative iron fence. The vehicle tore across the pristine emerald lawn of the United States Capitol, throwing massive clods of wet turf into the morning air.

Cross dropped his bullhorn, scrambling for safety as the multi-ton armored truck bypassed the roadblock entirely, skidding across the marble pavers of the plaza and coming to a dead stop directly in front of the media gallery at the entrance of the Senate Office Building.

Fifty high-definition television cameras, set up for the morning arrival of the Armed Services Committee members, swung around in unison. Red recording lights blinked across the press gallery like a field of scarlet eyes.