Perhaps we should all carry weapons......then if a terrorist attacked he'd be out gunned...like the nit wit that tried an armed pobbery in a Montanna gunshop with 10 armed customers, 2 armed employees, and a sherrifs deputy inside. Needless to say he didn't survive to further polute the gene pool
The point is there are a large number of ex law enforcement and military who would volunteer to serve as U.S Marshalls without pay if asked and be an unknown factor to anyone planning an operation that required intimidation like the 9-11 hijackings. I for one would, and I stay current with 9mm, .45 auto , AR-15, M-14 and (Sarge you'll love this one)...M1 garrand. I wonder if this has been suggested to the President?