https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/4075997Edit ImageSaveSaveEditCropCustom TextOld B-17 Air Tanker Dropping Retardent on Fire, c1960. Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 768 px | 300 dpiLarge JPEG 2824 x 1808 px | 300 dpiFree DownloadOld B-17 Air Tanker Dropping Retardent on Fire, c1960. Original public domain image from FlickrMore