d.c. are the possible targets of a truck bomb story. the plot ini qaeda s new leader ayman l zawahiriedge avenge the deatama officials tell abc news the plot involved three individuals, including at least one who is a u.s. citizen. the officials said the plot involves some kind of vehicle bomb, was aimed for some time between september 10th and 12th, with either k or the three reportedly traveled from pakistan s tribal areas, an al qaeda stronghold, through dubai, to the u.s. in mid-augu al qaeda central in afghanistan and pakistan is probably d down to a few hundre people. but it doesn t take many people to do this kind of attk. reporter: in new york s times square there was no obvious show of enhanced police prese but theyor ce commissioner said t require a significant show of crote c we do live in a world where