The Secret World of Extreme Militias, by Barton Gellman. Time, 30 September 2010.
As militias go, the Ohio Defense Force is on the moderate side. Scores of armed antigovernment groups, some of them far more radical, have formed or been revived during the Obama years, according to law-enforcement agencies and outside watchdogs. A six-month TIME investigation reveals that recruiting, planning, training and explicit calls for a shooting war are on the rise, as are criminal investigations by the FBI and state authorities. Readier for bloodshed than at any time since at least the confrontations in the 1990s in Ruby Ridge, Idaho, and Waco, Texas, the radical right has raised the threat level against the President and other government targets. With violence already up on a modest scale, FBI, Department of Homeland Security (DHS) and state agencies point to two main dangers of a mass-casualty attack: that a group of armed radicals will strike out in perceived self-defense, or that a lone wolf, trained and indoctrinated for war, will grow tired of waiting. Even the most outspoken militia commanders worry about the latter scenario. Kevin Terrell, a self-described colonel who founded a group of "freedom fighters" in Kentucky and predicts war with "the jackbooted thugs" of Washington within a year, says he has to fend off hotheads who call him a "keyboard commando." Some are ejected from his group, he says, and others are willing to wait a little longer. "You have to have the right fuel-air mixture, the piston has to be in the right position, the spark has to be perfectly timed," he says. "The day will come — sooner than later."
The article provides more details on two recent incidents:

- Reveals that in the 10 June 2009 shooting of a security guard at the U.S. Holocaust Memorial Museum, the intended target was White House senior adviser David Axelrod.

- A lone-wolf’s planned radiological dispersal device attack on the Presidential Inauguration was a credible threat. The suspect had acquired radioactive samples, was manufacturing TATP, and had significant financial resources.