MT. RAINIER NATIONAL PARK, Washington (CBS Newspath) Mt. Rainier National Park re–opened Saturday, less than a week after an Iraq War veteran shot and killed a park ranger.

Margaret Anderson had worked as a ranger with her husband for three years, before being shot by 24–year–old Benjamin Colton Barnes.

Authorities say Barnes, who showed signs of erratic behavior since returning from war, had fled to the mountain hours after a house party shooting in a Seattle suburb.

After killing Anderson and shooting at another ranger, Barnes fled for the woods, triggering a massive manhunt in the rugged terrain.

He was found dead in a creek the following day.

On Saturday, the flag at the ranger's kiosk remained at half–staff, and uniformed rangers wore black bands across their badges.

Cathy Craft, a park visitor says, "such a warm personality with helping people informative just a great great soul."

Anderson left behind her husband and two children. A memorial service is scheduled for Tuesday.