advanced-aircraft advanced-concepts advanced-research advanced-systems advanced-technology aeronautical-engineering aeronautics aerospace aerospace-engineering aerospace-industry aerospace-research aesthetics affordance affordances aircraft aircraft-design aircraft-development aircraft-engineering aircraft-manufacturing american-history american-industry area-51 autobiography aviation aviation-history aviation-industry aviation-pioneers behavior biography black-projects blackbird cia clarence-"kelly"-johnson clarence-l.-"kelly"-johnson classified classified-information classified-operations classified-programs classified-projects cognition cognitive cognitive-load cognitive-psychology cognitive-science cold-war cold-war-era collaboration constraints corporate-culture covert-operations creativity defense defense-contractor defense-industry design design-principles design-thinking development donald engineering engineering-challenges engineering-feats engineering-innovation engineering-marvels engineering-projects ergonomics error error-prevention espionage everyday everyday-objects everyday-things experimental experimental-aircraft f-117-nighthawk feedback feedback-loops fighter-jets functionality government government-contracts groundbreaking historical historical-memoir history human-behavior human-centered human-centered-design human-computer-interaction human-error human-factors industrial industrial-design industrial-espionage industry information-architecture innovation innovation-culture intelligence intelligence-community intelligence-gathering interaction interaction-design interface-design intuitive intuitive-design jets kelly-johnson leadership legendary-projects lockheed lockheed-martin management manufacturing mapping memoir mental-models military military-aircraft military-aviation military-history military-industrial-complex military-technology national-security norman norman-donald objects perception personal-memoir principles problem-solving product product-design product-development project-management projects psychology psychology-of-design reconnaissance research research-and-development science scientific scientific-advancements scientific-research secrecy secret secret-missions secret-operations secret-programs secret-projects security signifiers skunk-works space space-exploration spy-planes sr-71 sr-71-blackbird stealth stealth-technology strategic strategic-planning strategic-reconnaissance supersonic team team-collaboration team-dynamics teamwork technological-advancements technology test-flight test-flights test-pilots things top-secret top-secret-projects u-2 u-2-spy-plane united-states us-air-force usability usability-engineering usability-testing user-behavior user-centered user-centered-approach user-centered-design user-experience user-feedback user-friendly user-interaction user-interface user-interface-design user-psychology user-research visual-design war warplanes