A riderless horse led by a ranger leads a procession to a memorial service for Mount Rainier National Park Ranger Margaret Anderson on Jan. 10, 2012 in Tacoma, Washington. Anderson, a 34-year-old mother of two young girls, was shot and killed after setting up a roadblock to stop a vehicle that blew through a checkpoint on the road to the park's visitor center. The driver of that vehicle shot Anderson in her car and then ran away. The body of the suspect, 24-year-old Iraq war veteran Benjamin Colton Barnes, was found in a snowy creek the next day, where he died of hypothermia and drowning.

National Park ranger Lauren Newman walks past a line of rangers and others lining-up to meet a procession before a memorial service for Mount Rainier National Park ranger Margaret Anderson, Jan. 10, 2012, in Tacoma, Wash.

A photograph of Margaret Anderson and mountaineering sits on the stage of the memorial for U.S. National Park ranger Margaret Anderson held in Olsen Auditorium on the Pacific Lutheran University campus in Parkland, Wash. , Tuesday, Jan. 10, 2012.

The casket bearing the body of U.S. National Park ranger Margaret Anderson is flanked by two park rangers in Olson Auditorium before the memorial for her held on the Pacific Lutheran University campus in Parkland, Washington, Jan. 10, 2012.