Krista Gerhardt, Air Force Research Laboratory educational outreach specialist and Tyler Jenkins, a Greenon High School student, demonstrate how the transfer of energy from pedaling generates electricity, during National Engineers Week at Wright-Patterson Air Force Base, Ohio, Feb. 23, 2017. National Engineers Week celebrates how engineers make a difference in today’s world.

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Keywords: air, archive, armed, defence, engineer, engineers, force, forces, institute, military, national, people, reportage, servicemen, technology, usa, week