If you have a telephone number that has ever been called by an inmate in a federal prison, registered a change of address with the Postal Service, rented a car from Avis, used a corporate or Sears credit card, applied for nonprofit status with the IRS, or obtained non-driver’s legal identification from a private company, they have you on file.

Twice every year, the FBI assembles the National Mission Force for Marble Challenge, a complex inter-agency test of the ability of the blackest parts of the federal government to find and “render safe” a ticking nuclear bomb. It is the domestic counterpart exercise to Vital Archer I wrote about yesterday that takes place in Canada, and a drill that has become more and more sophisticated over the years, folding in not just conventional and unconventional military assets but also scientists from the Department of Energy, the Environmental Protection Agency, and the Centers for Disease Control and Prevention.

It’s a bug. In a jar. A chemically contaminated bug that was a prop in a military exercise held last month in Georgia. Engineers and security police at Moody Air Force Base played out a scenario where “sovereign citizens” used weapons of mass destruction—in the form of contaminated bugs—to attack the base, a trifecta of trickery that melds terrorism, Armageddon, and sedition all into one convenient domestic soup. That bug is the greatest threat to American freedom. Not because of Iran or North Korea or al Qaeda but because of a lazy and thoughtless convergence—that’s the hot word in military circles these days—that can define anyone who does anything as a homegrown terrorist threat. And it’s all about April 19.