Complex sentence: Lockheed engineers, led by Kelly Johnson, designed and submitted a novel design to the Air Force, notable for its sleekness, particularly its thin wings and missile-shaped fuselage, as well as a novel pilot ejection system.
Split into simpler sentences: Lockheed engineers, led by Kelly Johnson, designed and submitted a novel design to the Air Force. The design was notable for its sleekness, particularly its thin wings and missile-shaped fuselage, as well as a novel pilot ejection system.