From that article:
"Nobody trains police officers to look for one of their own," said Maria Haberfeld, a police training professor at John Jay College of Criminal Justice in New York. "I wouldn't want to be in their shoes and I don't think anybody else would."
Connie Rice, a civil rights attorney, said it's not surprising when police make mistakes during manhunts.
"They don't know where he is, and they're going to be edgy and jumpy," she said. "Don't get in their way. They're in a special state of consciousness right now, and they're not used to being hunted."
This is exactly what I was saying in the Dorner thread.