That there are people with guns on the Wildlife Refuge is not inherently unusual. Hunters are regularly permitted to shoot certain birds in designated areas on the refuge. Though it might seem strange for a wildlife refuge to allow hunting, the activity is closely monitored, and raises money for the Fish and Wildlife Service to purchase new habitats to protect. But the people currently there with guns didn't come to the refuge to go duck hunting. They came to take over the refuge headquarters, blockading themselves inside and forcing the refuge to close.