 The Lockheed Aircraft Company later became a major aerospace and defense company, and in 1995 merged with Martin Marietta to form Lockheed Martin.In 1930, Loughead formed the Lockheed Brothers Aircraft Corporation in Glendale, California and developed the experimental Olympia Duo-four, a five-place high-wing monoplane with two engines mounted side by side in the wood monocoque fuselage nose.It had a plywood-covered wing and wheel pants.