The Boeing Company (pronounced /?bo?./ boh-ing) (NYSE: BA) is an American multinational aerospace and defense corporation. Founded in 1916 by William E. Boeing in Seattle, Washington, the company has expanded over the years, and merged with McDonnell Douglas in 1997. Boeing moved its corporate headquarters from Seattle to Chicago, Illinois, in 2001.[2] Boeing is made up of multiple business units, which are Boeing Commercial Airplanes (BCA); Boeing Defense, Space & Security (BDS); Engineering, Operations & Technology; Boeing Capital; and Boeing Shared Services Group. Boeing is among the largest global aircraft manufacturers, and the second largest aerospace and defense contractor in the world based on defense-related revenue from 2011.[3] The company is the largest exporter by value in the US,[4] and its stock is a component of the Dow Jones Industrial Average. In March 1910, William E. Boeing bought Heath's shipyard in Seattle on the Duwamish River, which later became his first airplane factory.[5] Boeing was incorporated in Seattle by William Boeing, on July 15, 1916, as "Pacific Aero Products Co.". Boeing, who studied at Yale University, worked initially in the timber industry, where he became wealthy and acquired knowledge about wooden structures. This knowledge would prove invaluable in his subsequent design and assembly of airplanes. The company stayed in Seattle to take advantage of the local supply of Spruce wood.[6] William Boeing founded his company a few months after the June 15 maiden flight of one of the two "B&W" seaplanes built with the assistance of George Conrad Westervelt, a U.S. Navy engineer. Boeing and Westervelt decided to build the B&W seaplane after having flown in a Curtiss aircraft. Boeing bought a Glenn Martin "Flying Birdcage" seaplane (so called because of all the guy-wires holding it together) and was taught to fly by Glenn Martin himself. Boeing soon crashed the Birdcage and when Martin informed Boeing that replacement parts would not become available for months, Boeing realized he could build his own plane in that amount of time. He and his friend Cdr. G.C. Westervelt agreed to build a better airplane and soon produced the B&W Seaplane.[7] This first Boeing airplane was assembled in a lakeside hangar located on the northeast shore of Seattle's Lake Union. Many of Boeing's early planes were seaplanes. On May 9, 1917, the company became the "B

eing Airplane Company". In late 1917, the US entered World War I and Boeing knew that the US Navy needed seaplanes for training. So Boeing shipped two new Model Cs to Pensacola, Florida where the planes were flown for the Navy. The Navy liked the Model C so much that they ordered fifty more.[8] The company moved its operations to a larger former shipbuilding facility known as Boeing Plant 1, located on the lower Duwamish River. Boeing's original logo When World War I ended in 1918, a large surplus of cheap, used military planes flooded the commercial airplane market, and this prevented aircraft companies like Boeing from selling any new airplanes. Because of this, many airplane companies went out of business, but other companies, including Boeing, started selling other products. Boeing built dressers, counters, and furniture, along with flat-bottom boats called Sea Sleds.[8] In 1919 the Boeing B-1 made its first flight. It was a flying boat that accommodated one pilot and two passengers and mail. Over the course of eight years, it made international airmail flights from Seattle to Victoria, British Columbia.[9] On May 24, 1920, the Boeing Model 8 made its first flight. It was the first plane to fly over Mount Rainier.[10] In 1923, Boeing began a competition against Curtiss for a contract to develop a pursuit fighter for the U.S. Army Air Service. Although Curtiss finished its design first and was awarded the contract, Boeing continued to develop its PW-9 fighter. That plane, along with the Boeing P-12/ F4B fighter,[11] made Boeing a leading manufacturer of fighters over the course of the next decade. In 1925, Boeing built its Model 40 mail plane for the US government to use on airmail routes. In 1927, an improved version of this plane was built, the Model 40A. The 40A won the U.S. Post Office's contract to deliver mail between San Francisco and Chicago. The 40A also had a passenger cabin that accommodated two passengers.[12] That same year, Boeing created an airline named Boeing Air Transport, which merged a year later with Pacific Air Transport and the Boeing Airplane Company. The first airmail flight for the airline was on July 1, 1927.[12] The company changed its name to United Aircraft and Transport Corporation in 1929 and acquired Pratt & Whitney, Hamilton Standard Propeller Company, and Chance Vought. United Aircraft then purchased National Air Transport in 1930.