Why does America assume DC and NewYork will always be the next target?

[forevercloud3000]

Well the idea is that terrorrists will most likely attack a place of high interest to the US as a whole.
-NY is a center of commerce here in the US, as well as one of the highest concentrations of populace. It is an ideal target for you can kill/hurt the greatest amount of ppl in a smaller space.
-DC, it is our nation's capital after all. Why not try to take out the pres while he is chilling in his home?
-Hampton Roads/Norfolk Virginia: This is the US's largest Naval base on the east coast(and period if im not mistaken), Think Pearl Harbor.
*AND all most of these places have been attacked before. One might think that "well if they tried that area already why would they try again knowing that security will be upped?". Tru but no one every really expects lightning to strike twice in the same spot now do they?.........