Lance Cpl. Allen H. Cheuk, an optics technician with Combat Logistics Battalion 453, 4th Marine Logistics Group, replaces a low battery on an improvised drone created by Reserve Marines at an innovation cell located within their Home Training Center in San Jose, Calif., Feb. 9, 2019.

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Keywords: 3dprinter, 4thmlg, archive, armed, california, defence, drone, flight, forces, innovate, innovation, marine, marineforcesreserve, mfr, military, reportage, reserve, sanjose, servicemen, usa