Where do I start with this one since I have lived in Los Angeles since 1960. In this Dorner case, he obviously has something in his mind that he was treated very unfairly in the disciplinary action that got him fired. He let it eat on him until he just went off the deep end doing some pretty irrational acts. Killing the daughter and her fiance was low down, and by design aimed to hit so far under the belt it was out of proportion from loosing a job. Than he actually called the Father policeman who poorly represented his case, to screw with this mind and rub it in, before the funeral. A complete list of potential victims was in his written manafesto. Names he vowed to get even with. Evidently, the senior officer, he was ratting out on for brutality, was protected, and he got fired. I read a judge who reviewed it, upheld the firing, but commented he was not so sure Dorner lied about the brutality. His appeals were all but lost, taking the legal routes, now he was one a mission.
As an experienced Cop, why would he knowingly drive up to Big Bear and burn his truck? If you know the area, all roads in and out could be cordoned off, and he would be trapped in that area, which is what happened. He surfaced trying the carjack a car, and the rest is history. 2LAPD blunders occured when mistaken identiy looking for Dorners truck, they shot 2 females delivering papers in one truck, and another man in a pick up the next day. So many holes in the truck, I's a miracle they lived.
They explaned the first tear gas was non-incendiary, but the follow ups were, and they knew it. You know they were not going to take him alive, and if you herd the gurnfire, what choice did they have? I am sure they did not want it to go into sundown hours and darkness. An enormous firefight went down, just to rescue the 2 shot policemen at that scene.