That being said, the park rangers need long guns and better training, though I would never want to be on the receiving end of a Saiga 12 gauge-I would think you need a modern military rifle to fight that off.
Better training is a major part of it, but some of that would have to include a basic reality check, even before all the tacticool stuff comes into play. I have a friend who is a police officer in Washington and a firearms trainer at the state academy. The park is not in his area (quite), but he has been in contact with the sheriff's office where all this went down. He said the ranger didn't expect any major issues. She didn't fully block the road when she set up her roadblock. The perp drove around her, turned around, and came out of his vehicle shooting. She was still sitting in the driver's seat and her sidearm never came out of the holster.
What's even worse (and must be VERY hard on her colleagues) is that she didn't die instantly. She was alive and talking to the SWAT team after she was shot, but the perp laid down enough covering fire that the rescue team couldn't get to her before she bled out and died. Too bad they couldn't have called in the Air Force for some close air support.
Basically, she was blindsided. There's so little serious crime in the national parks (especially off-season) that I'm sure she had no expectation she was confronting anything other than a park visitor who was too impatient to stop at the tire chain checkpoint.
Two years and seven months active duty and he was still a PFC, eh? Sheesh, I made PFC out of AIT -- which means after four months. I was only on active duty for two years and I made E5 in a year and a half. I knew one guy who made E6 (Sergeant, not Specialist) in a year and half.