I can answer that. The suspect had an obviously very defensible elevated position. A killing platform. The suspect had already shot nearly a dozen cops killing almost half of them.
Begs the question: How long would you be willing to allow this person to sit up there on his lofty perch?
You may be right. They said he was in a garage . I keep thinking they had him cornered but he was in a parking garage. Mat have been the best solution but still a little troubling.