Any Means Necessary. Jack Mars

controlled by the Department of Homeland Security and the Pennsylvania Department of Environmental Protection. The next delivery was scheduled for two days from now.”

      “So about twenty-six days of radioactive waste,” Don said. “How much is that?”

      “The hospital doesn’t know,” Trudy said.

      “They don’t know?”

      “They inventory the waste and track it in a database. The database was accessed and erased by whoever stole the material. The amounts differ from month to month, based on treatment schedules. They can recreate the inventory from treatment records, but it’s going to take several hours.”

      “They don’t back up that database?” said Swann, the tech guy.

      “They do back it up, but the backup was also wiped clean. In fact, records for the past year were wiped.”

      “So someone knows what they’re doing,” Swann said.

      Luke spoke up. “How do we know this is an emergency if we don’t even know what was taken?”

      “Several reasons,” Trudy said. “This was more than a theft. It was a well-coordinated and planned attack. The video surveillance cameras in strategic parts of the hospital were turned off. This includes several entrances and exits, stairwells and freight elevators, the containment vault, and the parking garage.”

      “Did anyone talk to the security guards?” Luke said.

      “The two security guards who manned the video console were both found dead inside a locked equipment closet. They were Nathan Gold, fifty-seven-year-old white male, divorced, three children, no known ties to organized crime or extremist organizations. Also Kitty Faulkner, thirty-three-year-old black female, unmarried, one child, no known ties to organized crime or extremist organizations. Gold worked at the hospital for twenty-three years. Faulkner worked there eight years. The corpses were undressed, their uniforms missing. They were both strangled, with obvious facial discoloration, swelling, neck trauma, and ligature marks associated with death by garroting or similar technique. I have photos if you want to take a look.”

      Luke held up a hand. “That’s okay. But let’s assume for the moment that it was men who did this. Does a man kill a female security guard and then put on her uniform?”

      “Faulkner was tall for a woman,” Trudy said. “She was five foot ten, and heavyset. A man could easily fit into her uniform.”

      “Is that all we have?”

      Trudy went on. “No. There’s a hospital employee who was on shift and is currently unaccounted for. That employee is a custodial staff member named Ken Bryant. He’s a twenty-nine-year-old black male who spent a year in pre-trial detention on Rikers Island, and then thirty months at Clinton Correctional Center in Dannemora, New York. He was convicted of robbery and simple assault. Upon release, he completed a six-month jail diversion and job training course. He’s worked at the hospital for nearly four years, and has a good record. No attendance issues, no disciplinary issues.

      “As a custodian, he has access to the hazardous waste containment vault, and may have knowledge of hospital security practices and personnel. He once had ties to drug traffickers and to an African-American prison gang called the Black Gangster Family. The drug traffickers were low-level street dealers in the neighborhood where he grew up. He probably affiliated himself with the prison gang for personal protection.”

      “You think a prison gang, or a street gang, was behind this?”

      She shook her head. “Absolutely not. I mention Bryant’s affiliations because he’s still a loose end. To access and erase a database, as well as hijack a video surveillance system, requires technical expertise not generally associated with street or prison gangs. We’re thinking the level of sophistication and the materials stolen suggest a terrorist sleeper cell.”

      “What can they do with the chemicals?” Don said.

      “It has radiological dispersion device written all over it,” Trudy said.

      “Dirty bomb,” Luke said.

      “Bingo. There’s no other reason to steal radioactive waste. The hospital doesn’t know the amounts that were taken, but they know what the stuff was. The chemicals include quantities of iridium-192, caesium-137, tritium, and fluorine. Iridium is highly radioactive, and concentrated exposure can cause burns and radiation sickness within minutes or hours. Experiments have shown that a tiny dose of caesium-137 will kill a forty-pound dog within three weeks. Fluorine is a caustic gas dangerous to soft tissue like the eyes, skin, and lungs. At very low concentrations, it makes eyes water. At very high concentrations, it inflicts massive lung damage, causing respiratory arrest and death within minutes.”

      “Wonderful,” Don said.

      “The important takeaway here,” Trudy said, “is high concentrations. If you’re a terrorist, for this to work, you don’t want a wide dispersal area. That would limit exposure. You want to pack a bomb with the radioactive material and a conventional explosive like dynamite, and you want to set it off in an enclosed space, preferably with a lot of people around. A crowded subway train or subway station at rush hour. Commuter hubs like Grand Central Terminal or Penn Station. A large bus terminal or airport. A tourist attraction like the Statue of Liberty. The enclosed space maximizes radiation concentrations.”

      Luke pictured the narrow, claustrophobic stairwell that climbed to the top of the Statue of Liberty. On any given day, it was mobbed with people, often school children on field trips. In his mind’s eye he saw Liberty Island filled with ten thousand tourists, the ferries jammed with even more people, like refugee boats from Haiti.

      Then he saw the subway platforms of Grand Central Terminal at 7:30 a.m., so crowded with commuters that there was nowhere to stand. A hundred people would be lined up on the stairs, waiting for a train to come in and the platform to clear so the next group of people could descend. He pictured a bomb going off amongst that crowd.

      And then the lights going out.

      A wave of revulsion passed through him. More people would die in the panic, in the crush of bodies, than in the initial explosion.

      Trudy went on. “The problem we face is there are too many attractive targets to watch them all, and the attack doesn’t have to take place in New York. If the theft happened as long as three hours ago, then we’re already looking at a possible operations radius of at least a hundred fifty miles. That includes all of New York City and its suburbs, Philadelphia, and major cities in New Jersey like Newark, Jersey City, and Trenton. If the thieves remain at large for another hour, you can expand that radius to include Boston and Baltimore. The whole region is a population center. In a radius that large, we could be looking at as many as ten thousand possible soft targets. Even if they stick with high-profile, big-name targets, we’re still talking about hundreds of places.”

      “Okay, Trudy,” Luke said. “You gave us the facts. Now what’s your gut?”

      Trudy shrugged. “I think we can assume this is a dirty bomb attack, and that it’s sponsored by a foreign country, or possibly an independent terrorist group like ISIS or Al-Qaeda. There may be Americans or Canadians involved, but operational control is elsewhere. It’s definitely not a homegrown domestic group, like environmentalists or white supremacists.”

      “Why? Why not domestic?” Luke said. He already knew why, but it was important to air it, to take things one step at a time, to not overlook anything.

      “The leftists burn down Hummer dealerships in the middle of the night. They spike logging forests, and then paint the spiked trees so no one gets hurt. They have zero history of attacking populated areas or murdering anyone, and they hate radioactivity. The right-wingers are more violent, and Oklahoma City demonstrated they will attack civilian populations as well as symbols of government. But neither group likely has the training for this. And there’s another good reason why it probably isn’t them.”

      “Which is?” Luke said.

      “Iridium has a very short half-life,” Trudy said. “It’ll be mostly useless in a couple of days. Also, whoever stole these chemicals