Well my two cents...we are talking about bombs here, along with armed terrorists, not sure if many people can comprehend what it's like to be around bombs, but those people in Boston now can, and our soldiers can tell you about it. Our son says it wasn't fire fights with small arms or bullets flying around near so much as those damn bombs, he says something about bombs gets you down deep in your gut, cause you can't fight it, you are helpless. After having them go off close enough to you to make you deaf and seeing what they do to people that are close to them, it will chill you to the bone forever. Now imagine your a cop and going after a guy with bombs, you don't know if he is rigged, where he left them...well, you get the picture. So if something like this happens in my area and a person/persons are on the loose, those cops can pay me a visit and check out my place, and if they want a cup of hot black coffee we'll get em one too since I doubt they got much sleep. They did a helluva job without much sleep and not much real life practice, I think they did a fine job.
I understand about the good cop bad cop thing, and I also understand about feeling funny about people coming to your house with badges on, or checking your property out, but I don't think any of them were forcing their way into antibody's house. Most people wanted their place "cleared". There sometimes are situations where people with badges and citizens need to band together, they all ain't bad cops, the very few that are will probably be dealt with, and I don't think any of the cops were kicking people's doors off the hinges, anyone does that to my place has more to worry in the next two seconds than the guy their looking for. I don't think they were trying to gain enemies, they had enough to handle without kicking in doors and getting blown back out with 12 gauges from citizens. I'm sure they knew people were edgy and armed in their homes as well.