The department has historically been known to quickly embrace new technologies. The Marine Bureau began in 1933 with the gift of an 18-foot Chris Craft mahogany speedboat from the residents of Manhasset Bay. The Aviation Bureau followed a year later with the gift of a Stinson airplane from wealthy county residents. The aircraft was grounded by World War II, but the air unit was revived in 1968 with the purchase of four helicopters to assist in pursuits and medical evacuations. The elite Highway Patrol Bureau, which covers the Long Island Expressway and the Seaford-Oyster Bay Expressway and includes motorcycle officers, was founded in 1935. All police vehicles are now equipped with computer keyboards, and, since 1973, air conditioning.