U.S. Navy Aviation Machinist's Mate 3rd Class Wayne Suddeth performs maintenance on the tail rotor of an MH-60S Sea Hawk helicopter assigned to Helicopter Sea Combat Squadron (HSC) 8 aboard the aircraft carrier USS John C. Stennis (CVN 74), Oct. 27, 2012, while under way in the Arabian Sea. (Photo by Mass Communication Specialist 3rd Class Will Tyndall, U.S. Navy/Released)
https://flic.kr/p/ySrzZw | X-15 Rocket Plane. Artist: Wilf Hardy | Illustration on p.23 of 'Look and Learn' issue no. 214 (15 February 1966). Three X-15s were built, flying 199 test flights, the last on 24 October 1968. Scott Crossfield piloted the first powered flight, on 17 September 1959. In July and August 1963, pilot Joe Walker crossed the 100 km altitude mark, joining the NASA astronauts and Soviet Cosmonauts as the only humans to have crossed the barrier into outer space at the time.