American Airlines took delivery of its 800th Boeing airplane last week - a 757-200. The milestone delivery underscores a strong, enduring relationship between the carrier and The Boeing Company. On Jan. 25, American Airlines celebrated the 40th anniversary of the first jet transcontinental service, which began with the Boeing 707. Over the years, American Airlines has operated jetliners ranging from the 707 in the late 1950s to today's full fleet of new aircraft, including the 777. To date, American Airlines has ordered 941 airplanes from Boeing.