OK, five guys with AR platforms (most likely). That's 12 shots each. That's only about six seconds of firing on someone that is also armed with an AR in a high stress situation. As bad as it sounds, that's not excessive.
Where did you get that it took an hour to clear the house?
First of all 6 sec is a long time to repetitively fire into someone , Specially 5 guys deep . Being a LEO in 2 major cities at onetime myself none of this makes any sense. This is where I found
"A report by ABC News affiliate KGUN found that more than an hour had passed before the SWAT team let the paramedics work on Guerena. By then he was dead. "
http://abcnews.go.com/US/tucson-swat-team-defends-shooting-iraq-marine-veteran/story?id=13640112