Photos: North Dakota protesters vow to stay until pipeline re-routed

Veterans gather to march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veteran Cash Jackson leads a veteran's march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans gather to march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers bless veterans during a march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans return to camp after marching to the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans lock arms during a march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

The Oceti Sakowin Camp sits covered in snow as more continues to fall on Monday, Dec. 5, 2016, near Cannon Ball.

Larry O'Brien of Atlantic, Iowa, packs up his tent as camp construction crews continue to build tarp teepees in the background at the Oceti Sakowin Camp on Monday, Dec. 5, 2016, near Cannon Ball.

Bus driver Bill Hill in the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball.

Popz Longwalker puts on his native jewelry in the hut he and his wife, Dawne of a new day DuShane, share in the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. The couple left home in Norman, Okla., and put what they had in storage saying they just taking it a day at a time here.

Despite high winds and snowfall campers in the Oceti Sakowin Camp made the best of it and skied down Media Hill on Monday, Dec. 5, 2016 near Cannon Ball.

Native dancers perform during a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Bus driver Bill Hill from New York, hugs Fronz after giving him the supplies he needed to fix his solar panel in the Oceti Sakowin Camp on Monday, Dec. 5, 2016, near Cannon Ball.

Veteran Cash Jackson speaks to a crowd of veterans during a march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veteran Cash Jackson leads a veteran's march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veteran Cash Jackson leads a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans gather to march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans gather to march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers perform during a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers perform during a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers perform during a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers perform during a veterans march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans gather to march on the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Veterans return to camp after marching to the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers return to camp after marching with veterans to the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Native dancers return to camp after marching with veterans to the highway 1806 bridge north of the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. Officials had been staffing the bridge full time but have said they are going to cut back.

Denise O'Brien, from Atlantic, Iowa, poses for a photo in the back of their converted school bus in the Oceti Sakowin Camp on Monday, Dec. 5, 2016 near Cannon Ball. The bus started life as a school bus in the 80s then was used as a RAGBRAI bus as recently as this past year.

A rider on horseback rides up Flag Row as snow falls on the Oceti Sakowin Camp on Monday, Dec. 5, 2016, near Cannon Ball.

Popz Longwalker fixes the furnace in the hut he and his wife, Dawne of a new day DuShane, share in the Oceti Sakowin Camp on Monday, Dec. 5, 2016, near Cannon Ball. The couple are part of a South Dakota Tribe and live in Norman, Oklahoma.

The Oceti Sakowin Camp sits covered in snow as more continues to fall on Monday, Dec. 5, 2016, near Cannon Ball.

The Oceti Sakowin Camp sits covered in snow as more continues to fall on Monday, Dec. 5, 2016 near Cannon Ball.

Denise O'Brien, from Atlantic, Iowa, gets a thumbs up from bus driver Bill Hill of New York as she transfers supplies onto the bus in the Oceti Sakowin Camp on Monday, Dec. 5, 2016, near Cannon Ball. The bus started life as a school bus in the 80s then was used as a RAGBRAI bus as recently as this past year.

The Oceti Sakowin Camp sits covered in snow as more continues to fall on Monday, Dec. 5, 2016, near Cannon Ball.