Of course the officer was afraid. He didn't put himself in that situation though, he was required to be. I'm a huge supporter of rehabilitation, working to help people break out of crime and gangs etc, but in this scenario there was a clear and present danger, and there were multiple opportunities for the criminal to make this all stop. It's a terribly sad ending for all involved, but justice, though cruelly, was served. I'm of the same opinion as you that police should be under extreme scrutiny in their line of work, and I feel this passed the test.