Last night, I had the novel experience of entering my house guarded by a squad of SWAT officers, complete with body armor, helmets, and rifles. They went in first with their rifle-mounted flashlights, declared my dining room clear, and let me inside. Our mission: to get the dog's leash from the kitchen so we could "secure" our beloved beast from the back yard so they could search back there for a fled suspect without having a confused canine get in the way. I successfully got Rocco from the back yard and the two of us headed back across the street; Rocco only barking at the nearby police dog a couple times before going back to his normal happy self. Interlopers in his neighborhood, you see.
Apparently Sunnyvale Police shot and killed one suspect at a nearby motel, and another left the scene and was suspected of being somewhere in our neighborhood. They brought in help to search the neighborhood from several of the surrounding cities. I saw squad cars from Los Altos, Palo Alto, the Sheriff's department, and at least one other city for which I couldn't read the seal on the door for as it sped past. The SWAT officers mentioned above were from San Jose. A bunch of unmarked black SUVs showed up too. No idea where they came from. Some of them were wearing camouflage instead of the usual blue/black police uniform.
Most of the evening was spent across the street chatting with the neighbors over the sound of the circling helicopter and watching dozens of cops do their thing. For four or five hours, we just waited around and wishing they'd let us go back into our house. It was quite surreal getting a close-up view of police militarization. The camouflage guys in particular seemed pretty weird.
Last I've heard, they didn't catch the guy they were looking for.