The sailors were Airman Mohammed Sameh Haitham, 19, of St. Petersburg, Florida; Airman Apprentice Cameron Scott Walters, 21, of Richmond Hill, Georgia; and Ensign Joshua Kaleb Watson, 23, from Coffee County, Alabama.<br /><br />A U.S. official said the FBI confirmed it is operating on the assumption the attack was an act of terrorism.

The sailors were Airman Mohammed Sameh Haitham, 19, of St. Petersburg, Florida; Airman Apprentice Cameron Scott Walters, 21, of Richmond Hill, Georgia; and Ensign Joshua Kaleb Watson, 23, from Coffee County, Alabama.

A U.S. official said the FBI confirmed it is operating on the assumption the attack was an act of terrorism.