Lt. Cdr. Rorke Denver, a Navy SEAL among the stars of the film "Act of Valor,"will speak at a Las Vegas conference for the unmanned-aircraft, or drone, industry next month. (Twentieth Century Fox Home Entertainment)

Lt. Cdr. Rorke Denver, a Navy SEAL among the stars of the film "Act of Valor,"will speak at a Las Vegas conference for the unmanned-aircraft, or drone, industry next month. (Twentieth Century Fox Home Entertainment)