https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12289551Edit ImageSaveSaveEditCropCustom TextSentry on guard at the Army transport dock. San Francisco, California. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 1176 px | 300 dpiLarge JPEG 3500 x 3430 px | 300 dpiBest Quality JPEG 4819 x 4722 px | 300 dpiTIFF 4819 x 4722 px | 300 dpi | 43.4 MBFree DownloadSentry on guard at the Army transport dock. San Francisco, California. Sourced from the Library of Congress.More