found flying atop custom houses as well, and the practice became a requirement in 1874. On 7 June 1910, President William Howard Taft issued an Executive Order adding an emblem to (or "defacing") the ensign flown by the Revenue cutters to distinguish it from what is now called the Customs Ensign flown from the custom houses. The emblem was changed to the official seal of the Coast Guard in 1927. The purpose of the ensign is to allow ship captains to easily recognize those vessels having legal authority to stop and board them. It is flown only as a symbol of law enforcement authority and is never carried as a parade standard. Coast Guard Standard The Coast Guard Standard is used in parades and carries the battle honors of the Coast Guard. It was derived from the jack of the Coast Guard ensign which was flown by revenue cutters. The emblem is a blue eagle from the coat of arms of the United States on a white field. Above the eagle are the words "UNITED STATES COAST GUARD" below the eagle is the motto, "SEMPER PARATUS" and the inscription "1790." Service Mark ("Racing Stripe") The Racing Stripe, officially known as the Service Mark, was designed in 1964 by the industrial design office of Raymond Loewy Associates to give the Coast Guard a distinctive, modern image. Loewy had designed the colors for the Air Force One fleet for Jackie Kennedy. President Kennedy was so impressed with his work, he suggested that the entire Federal Government needed his make-over and suggested that he start with the Coast Guard. The stripes are canted at a 64 degree angle, coincidentally the year the Racing Stripe was designed. The racing stripe is borne by Coast Guard cutters, aircraft, and many boats. First used and placed into official usage as of 6 April 1967, it consists of a narrow blue stripe, a narrow white stripe between, and a broad CG red bar with the Coast Guard shield centered. Red-hulled icebreaker cutters and most HH-65/MH-65 helicopters (i.e., those with a red fuselage) bear a narrow blue stripe, a narrow empty stripe the color of the fuselage (an implied red stripe), and broad white bar, with the Coast Guard shield centered. Conversely, black-hulled cutters (such as buoy tenders and inland construction tenders) use the standard racing stripe. Auxiliary vessels maintained by the Coast Guard also carry the Racing