It was a grisly scene inside Apartment 3722 at the Hamptons, a gated community in Tampa, Florida.
One body lay face up on the floor, wedged between a wall and an air mattress. A handgun was stuffed in a holster on the dead man’s waist. The other body, clad in a black T-shirt and shorts, was slumped back on a futon, a shattered and bloody iPhone on his lap. A police investigator would later write that the two men had been “shot multiple times at close range with an assault rifle.”
There were some obvious clues that this was no ordinary double homicide. Tacked to the wall near the bodies was a large black-and-white flag bearing the insignia of the Schutzstaffel, or SS, Adolf Hitler’s elite paramilitary unit. On a nearby shelf was a black Stahlhelm, the distinctive helmet worn by Nazi soldiers during World War II. There were multiple copies of “Mein Kampf” and a prominent place was reserved for “The Turner Diaries,” the infamous novel of race war in America that has inspired generations of terrorists, among them Timothy McVeigh, the Oklahoma City bomber. A framed picture of McVeigh sat on a dresser.
On that night in May 2017, the police quickly took two suspects into custody and developed a rough outline of what had happened. One of the suspects, Devon Arthurs, 18, said the victims were his roommates, and members of a neo-Nazi group called the Atomwaffen Division. Arthurs said that he’d decided to leave the group, and that he’d killed the men to keep them from carrying out what he said were their plans for violence.
The second suspect detained by police, Brandon Russell, also lived in the apartment. Russell told the authorities he’d just returned home from a weekend of training with the Florida Army National Guard. And then Russell revealed something that should have set off alarms among federal investigators assigned to track the growing threat from armed, violent right-wing extremists. He said, and the police quickly confirmed, that the single-car garage attached to the apartment was full of explosives.
Explosives experts from the Tampa Police Department and the local FBI field office soon found components of a crude pipe bomb as well as radioactive materials. The search turned up ammonium nitrate and nitromethane, the mixture used by McVeigh to destroy the federal building in Oklahoma City in 1995. There were sacks of explosive precursors, including potassium chloride, red iron oxide and potassium nitrate. There were homemade fuses fashioned from brass 5.56 mm rifle cartridges. In a closet, they found two Geiger counters.
And there was a cooler with the name Brandon scrawled on the lid in black marker. Inside, the investigators discovered HMTD — hexamethylene triperoxide diamine — a potent, highly volatile peroxide-based explosive. It has become a favored tool of terrorists both here and abroad, who cook it up in small batches using recipes circulating on the internet and in improvised weapons manuals.
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“We know what the problem is, but every time there’s another one of these attacks all we hear is, ‘Oh, this is shocking, this is horrible, our prayers are with the people, who would have imagined this ever would have happened?’” Cohen said. “No, it’s very imaginable because it’s happening on a regular basis in this country. We’re just not doing enough to stop it.”