It would be possible to get there from the bombing to the island.
In fact the timing “fits”...
In our Oklahoma City Bombing, it was thought to be done by this one lone conservative crazy guy. But there was a lot of evidence covered up that Muslims from Iraq were involved. They put the known perp Timothy McVeigh to death as fast as they could. Maybe too fast. There was a very well sourced book about this attack and The investigation. “the third terrorist” by Jayna Davis.
In fact the timing “fits”...
Eurotwit, I am starting to go back to my original thought of two or three perps. One perp does not fit ... based upon the number of devices found and the ability to move the necessary ammunition and firepower to carry out the attack on the island. It would seem someone would have been more alert after the initial bomb going off ... I could be wrong yet the pieces, for me, do not fit.