A National Park Service review board will look into the circumstances surrounding the murder of Ranger Margaret Anderson at Mount Rainier.
Anderson was shot to death on January 1 after Benjamin Barnes drove through a park checkpoint near Longmire Ranger Station.
The NPS board wants to determine what changes need to be made to prevent a similar tragedy.
Anderson responded by setting up a roadblock about a mile away from the checkpoint on Paradise, but when Barnes encountered it, police said he got out of his car and fired at Anderson in her vehicle.
Hiker Jeremy Best told KING 5 News back in January he chatted with Anderson minutes before the incident unfolded. He said she got a call on her radio and then head down the mountain in her vehicle.
"Maybe she didn't know what she was stopping," he said, "but she responded to a situation in a timely fashion and I believe it saved a lot of lives."
The checkpoint is designed to inspect vehicles for proper tires and chains.
Barnes was found dead the next day in a river near Narada Falls.
Anderson was a 34-year-old, married mother of two children.
KING 5's Lindsay Chamberlain and the Associated Press contributed to this report.