This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Defense.gov News Photo NN. en Petty Officer rd class Ryan Pritchard looks through the center of Fresnel lens while testing new lamp to ensure it is working properly in the lighthouse at Naval Air Station Pensacola Fla on Aug NN Navy defense gov aspx newsphotoid en Gary Nichols Navy PDUSGovMilitaryNavy Defense gov news media