Personally, I think they did one hell of a job considering the utter chaos that had to be swarming everywhere. Seems to be a blunder I could live with if they review and learn from it. Sweeping mistakes under the rug will always bite you in the ass..
One question that begs being answered is how in be world could a K-9 unit not find this guy? Those teams are supposed to operate on a unbelieveable level. They had blood, certainly seems like that would've been plenty to trail and locate..