An F-111 of the Royal Australian Air Force showcases a fuel dump and burn procedure during the flight display, Tuesday Feb. 2, 2010 in Singapore during the opening day of the Singapore Airshow 2010, Asia’s largest aerospace and defense exhibition to be held in the city-state. (AP Photo/Wong Maye-E)

An F-111 of the Royal Australian Air Force showcases a fuel dump and burn procedure during the flight display, Tuesday Feb. 2, 2010 in Singapore during the opening day of the Singapore Airshow 2010, Asia’s largest aerospace and defense exhibition to be held in the city-state. (AP Photo/Wong Maye-E)