I feel the terrorist are going to play the goobermint, nooooooze presstitutes and sheeple in such a manner for as long as possible till they get complacent with the current crop of color coded alerts and intelligence sourced warnings and then and only then will they whack a US asset again.
Of course this doesn't preclude the odd wannabe terrorist from acting alone so thats where a armed and alert citizen with a cell phone comes into play IMHO. If we see such, report it , maintain observation and distance and use force only to save human lives is my plan. Now with a M1A in the truck and my daily carried 1911A1 I can do all the above in a safe manner fairly well and that is my way of dealing with the day to day threats be they Coyotes and Criminals here in Texas.
Stay Safe !!