https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12242230Edit ImageSaveSaveEditCropCustom Text[Untitled photo, possibly related to: Fort Belvoir, Virginia. Sergeant George Camblair learning how to use a gas mask in a practice smokescreen]. 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 1188 x 1200 px | 300 dpiLarge JPEG 3466 x 3500 px | 300 dpiBest Quality JPEG 4835 x 4882 px | 300 dpiTIFF 4835 x 4882 px | 300 dpi | 45.02 MBFree Download[Untitled photo, possibly related to: Fort Belvoir, Virginia. Sergeant George Camblair learning how to use a gas mask in a practice smokescreen]. Sourced from the Library of Congress.More