I'm not sure - one commentator was saying that the marathon was a classic terrorist target - lots of innocent people, he seemed to think that a solo loony is more likely to have a personal target - tax office, teacher, local car wash that damaged his car, president.
Edited by Tangle, : No reason given.
Life, don't talk to me about life - Marvin the Paranoid Android
Perhaps the commentator has forgotten about (or perhaps never heard of, it was 17 years ago) Eric Rudolph, the man who plead guilty to bombing the 1996 Atlanta Olympics and who hid out in the North Carolina mountains.
Sure, he was just guessing from what he thought was the balance of probabilities.
There was also talk of the difficulty in setting two bombs (and there's talk of more) and that the target was also in a pretty secure location (the end of the marathon which was well policed and searched.)
But everyone is still speculating.
Life, don't talk to me about life - Marvin the Paranoid Android