Wow this spectacularly bad judgement on the part of LEO (FBI), right up there with the Waco siege (ATF). Thanks for bringing this up, I did not see it before.

Still, this looks like an improvised explosive device was used by the police, and it's not an off-shot of the US military programs.

So my point still stands - just because something is deployed by the US military abroad does not mean it will be deployed at home. To suggest otherwise is to spread needless gloom and panic.