https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12242492Edit 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 1169 x 1200 px | 300 dpiLarge JPEG 3410 x 3500 px | 300 dpiBest Quality JPEG 4823 x 4950 px | 300 dpiTIFF 4823 x 4950 px | 300 dpi | 45.54 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