Key things to know about the militia standoff in Oregon

HOW DID THIS SITUATION BEGIN? Tension has been building for weeks in the Burns, Oregon, area over the case of Dwight and Steven Hammond. Dwight Hammond, 73, and Steven Hammond, 46, said they lit fires on federal land in 2001 and 2006 to reduce the growth of invasive plants and protect their property from wildfires. The two were convicted three years ago and served time — the father three months, the son one year. But in October, a federal judge in Oregon ruled their terms were too short under U.S. law and ordered them back to prison for about four years each. ___ WHO IS LEADING THE PROTESTERS? The Hammonds have received support from local residents, but the most vocal groups are from outside the area. Ammon Bundy, the son of Nevada rancher Cliven Bundy, who was involved in a standoff with the government over grazing rights, is among those organizing the opposition at the wildlife refuge. Ammon Bundy and militiamen from other states arrived last month in Burns, some 60 miles from the Hammond ranch. Ammon Bundy has criticized the U.S. government for what he called a failed legal process...Washington Post