Bush and Katrina

One might ask: Why was not Bush more presidential in the wake of Katrina as he appeared to be in the wake of 9-11? My take is that the person in charge immediately after 9-11 was Rudolph Guilliani. It was he who was presidential. Isn't it strange that two U.S. Navy aircraft carriers were dispatched to New York City within hours and the hospital ship Comfort was dispatched the next day following the attack on the WTC yet for Katrina, Comfort sat in Baltimore for a week before setting sail to, not New Orleans, but Pascagoula, Miss.