Stars light up the night sky over the entrance to the Malheur National Wildlife Refuge headquarters near Burns, Ore., on January 8, 2016. The occupation of the site by armed protesters, led by Ammon and Ryan Bundy, will enter its seventh day tomorrow. (Photo by Alex Milan Tracy) *** Please Use Credit from Credit Field *** (Sipa via AP Images)

Stars light up the night sky over the entrance to the Malheur National Wildlife Refuge headquarters near Burns, Ore., on January 8, 2016. The occupation of the site by armed protesters, led by Ammon and Ryan Bundy, will enter its seventh day tomorrow. (Photo by Alex Milan Tracy) *** Please Use Credit from Credit Field *** (Sipa via AP Images)

In a Saturday, Jan. 2, 2016 photo, rancher Dwight Hammond Jr. greets protesters outside his Burns, Ore., home. Hammond and his son, Steven, reported back to prison Monday, Jan. 4. The Hammonds were convicted of arson three years ago for fires on federal land in 2001 and 2006, according to prosecutors. The men served no more than a year until an appeals court judge ruled the terms fell short of minimum sentences that require them to serve about four more years. Their sentences were a rallying cry for the group calling itself Citizens for Constitutional Freedom, took over the Malheur National Wildlife Refuge on Saturday night, Jan. 2. (Les Zaitz/The Oregonian via AP)

In a Saturday, Jan. 2, 2016 photo, rancher Dwight Hammond Jr. greets protesters outside his Burns, Ore., home. Hammond and his son, Steven, reported back to prison Monday, Jan. 4. The Hammonds were convicted of arson three years ago for fires on federal land in 2001 and 2006, according to prosecutors. The men served no more than a year until an appeals court judge ruled the terms fell short of minimum sentences that require them to serve about four more years. Their sentences were a rallying cry for the group calling itself Citizens for Constitutional Freedom, took over the Malheur National Wildlife Refuge on Saturday night, Jan. 2. (Les Zaitz/The Oregonian via AP)

In a Saturday, Jan. 2, 2016 photo, rancher Dwight Hammond Jr. greets protesters outside his Burns, Ore., home. Hammond and his son, Steven, reported back to prison Monday, Jan. 4. The Hammonds were convicted of arson three years ago for fires on federal land in 2001 and 2006, according to prosecutors. The men served no more than a year until an appeals court judge ruled the terms fell short of minimum sentences that require them to serve about four more years. Their sentences were a rallying cry for the group calling itself Citizens for Constitutional Freedom, took over the Malheur National Wildlife Refuge on Saturday night, Jan. 2. (Les Zaitz/The Oregonian via AP)

A sign shows support for the Hammonds Tuesday, Jan. 5, 2016, in Burns, Ore. A group calling itself Citizens for Constitutional Freedom said it wants an inquiry into whether the government is forcing ranchers off their land after Dwight Hammond and his son, Steven, reported back to prison Monday. Ammon Bundy said the group felt it had the support of the local community. (AP Photo/Rick Bowmer)

A members of the group occupying the Malheur National Wildlife Refuge headquarters, walks to one of it's buldings Monday, Jan. 4, 2016, near Burns, Ore. The group calls itself Citizens for Constitutional Freedom and has sent a "demand for redress" to local, state and federal officials. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (AP Photo/Rick Bowmer)

A members of the group occupying the Malheur National Wildlife Refuge headquarters, stands guard Monday, Jan. 4, 2016, near Burns, Ore. The group calls itself Citizens for Constitutional Freedom and has sent a "demand for redress" to local, state and federal officials. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (AP Photo/Rick Bowmer)

Ammon Bundy, one of the sons of Nevada rancher Cliven Bundy, speaks with reporters during a news conference at Malheur National Wildlife Refuge headquarters Monday, Jan. 4, 2016, near Burns, Ore. The group calls itself Citizens for Constitutional Freedom and has sent a "demand for redress" to local, state and federal officials. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (AP Photo/Rick Bowmer)

Members of the group occupying the Malheur National Wildlife Refuge headquarters hug after Ammon Bundy, center, left, one of the sons of Nevada rancher Cliven Bundy, spoke with reporters during a news conference Monday, Jan. 4, 2016, near Burns, Ore. The group calls itself Citizens for Constitutional Freedom and has sent a "demand for redress" to local, state and federal officials. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (AP Photo/Rick Bowmer)

A member of the group occupying the Malheur National Wildlife Refuge headquarters, looks on at the front gate Monday, Jan. 4, 2016, near Burns, Ore. The group calls itself Citizens for Constitutional Freedom and has sent a "demand for redress" to local, state and federal officials. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (AP Photo/Rick Bowmer)

Protesters watch from a watch tower at the National Wildlife headquarters in Burns on Sunday, Jan 3, 2016. Armed protesters took over the Malheur National Wildlife Refuge south of Burns on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. The decision to send the man back to prison generated controversy and is part of a decades-long dispute between some Westerners and the federal government over the use of public lands. (Mark Graves/The Oregonian via AP)

Brand Thorton, 63, of California, blows into an African spiral horn Sunday, Jan. 4, 2016, at the Malheur National Wildlife headquarters in Burns, Ore., after armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (Mark Graves/The Oregonian via AP)

A small group of militia in Burns, Or., who were there to support a local ranching family, took over the federal office of the Malheur National Wildlife Refuge headquarters Saturday, Jan. 3, 2016, in a development that stunned the community. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. (Mark Graves/The Oregonian via AP)

Established in 1908, Malheur National Wildlife Refuge headquarters, seen here on Jan. 4, 2016, in Burns, Ore., is one of the premier migratory bird habitats in the U.S., featuring Malheur Lake. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. No workers were on duty when the occupiers arrived. (Mark Graves/The Oregonian via AP)

Protesters roam the Malheur National Wildlife headquarters in Burns, Ore., on Sunday, Jan 3, 2016. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. The decision to send the man back to prison generated controversy and is part of a decades-long dispute between some Westerners and the federal government over the use of public lands. (Mark Graves/The Oregonian via AP)

Protesters watch after taking over a watch tower at the National Wildlife headquarters in Burns, Ore., on Sunday, Jan 3, 2016. Armed protesters took over the Malheur National Wildlife Refuge south of Burns on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. The decision to send the man back to prison generated controversy and is part of a decades-long dispute between some Westerners and the federal government over the use of public lands. (Mark Graves/The Oregonian via AP)

Protesters roam the Malheur National Wildlife headquarters in Burns, Ore., on Sunday, Jan 3, 2016. Armed protesters took over the Malheur National Wildlife Refuge on Saturday after participating in a peaceful rally over the prison sentences of local ranchers Dwight and Steven Hammond. The decision to send the man back to prison generated controversy and is part of a decades-long dispute between some Westerners and the federal government over the use of public lands. (Mark Graves/The Oregonian via AP)