Armed militants took over the Malheur National Wildlife Refuge headquarters in Burns, Oregon on Saturday after a protest in defense of two ranchers about to be jailed for arson.

The protest featured singing and flower-planting, but a group of what journalists say is about 15 people broke off from a larger group of about 300 to take over the building, which was unoccupied due to the holiday weekend.

See also: Militia group led by Bundy brothers seizes federal building after protest

So who are these guys?

Who are the militants?

The armed group reportedly consists of around 15 people, though the group says many more are occupying the refuge headquarters.

Several of them are known anti-government militants. Ryan Payne, a Montana army veteran, was involved in an armed anti-government standoff in Nevada in 2014. Blaine Cooper, also involved in the Nevada standoff, became known for lambasting a militant group known as the Oath Keepers after that group left the standoff because they were afraid of a drone attack.

Jon Ritzheimer, an ex-marine infamous for his hatred of Islam, is also said to be involved.

But the group is led by Ammon Bundy, whose last name is quickly becoming the most prominent name associated with right-wing, anti-government militants.

Who are the Bundys?

Rancher Cliven Bundy speaks with supporters at an event on April 11, 2015, in Bunkerville, Nevada. Image: John Locher/Associated Press

America got to know the Bundys in 2014, when agents with the Bureau of Land Management began to round up the cattle of Nevada rancher Cliven Bundy.

The bureau said Bundy's cattle were grazing on federal land without paying required fees. Bundy claimed the federal government had no right to the land to begin with.

Armed militants from several states arrived at Bundy's ranch in the following days, leading to a standoff with federal agents that simmered down after agents returned Bundy's cattle.

Ammon Bundy, Clive's son, is at the occupation along with two brothers. Ammon appears to be the de facto leader of the militants, and he's held several interviews with media outlets since the Saturday takeover.

What do the militants want?

Ammon Bundy chats with a protester on Jan. 2, during a march on behalf of a Harney County ranching family in Burns, Oregon. Image: Les Zaitz/The Oregonian/Associated Press

The militants, like the protesters, do not want to see the ranchers go to jail.

But Ammon Bundy has also reportedly said he wants to hand over federal land in the area to loggers, miners and ranchers.

What's their plan?

For now, it appears the militants plan to stay put. Ammon Bundy has said they could be there for "years."

Ryan Bundy also said that the militants plan to remain peaceful, but they would consider violence if law enforcement tried to remove them.

The building is unoccupied and not located in a populated area, and law enforcement have so far not acted to remove the militants. The FBI, the Harney County Sheriff's Office and Oregon State Police are all reportedly aware of the occupation.