2 Pentagon Police Officers Shot - AP

The shooter, identified as John Patrick Bedell, 36, of Hollister, Calif., died hours after being admitted to a hospital in critical condition, authorities said. They had no motive for the shooting.

There were signs, however, that Bedell may have harbored resentment for the military and had doubts about the facts behind the Sept. 11 terrorist attacks. - 2 Pentagon Police Officers Shot