In a Decade DHS Has Spent Nearly $35 Billion Dollars

In a decade DHS has spent nearly $35 Billion dollars on various grants to prevent terrorism such as purchasing an armored truck with a rotating gun turret in a city averaging almost no homicides annually. What have the antiterrorism results been?

A) The armored vehicles have been useful in stopping domestic terrorism, which is not really antiterrorism, but still helpful.
B) Most terrorists see the advanced technology and pick different cities, in the same way that having armed citizens prevents break-ins.
C) It is because of such weaponry that cities have no homicides or terrorist threats; to put it like that is backwards.
D) The results have not stopped terrorism and so are probably a waste of money.