Bruce McIlhaney ©Stars and StripesSouth Vietnam, April, 1968: A 9th Infantry Division airboat glides through the water near Nha Be, an area said to be used by the Viet Cong in organizing attacks on Saigon. The airboats, which could travel at speeds up to 40 knots, were used in shallow waters similar to those where the boats are most commonly found, in Florida's Everglades.