https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/439995Edit ImageSaveSaveEditCropCustom TextNASA's two modified F-15B research aircraft joined up for a fly-over of NASA's Dryden Flight Research Center on Edwards AFB, Calif., after a research mission. Original from NASA . Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 1200 x 960 px | 300 dpiLarge JPEG 3000 x 2400 px | 300 dpiTIFF 3000 x 2400 px | 300 dpi | 41.23 MBFree DownloadNASA's two modified F-15B research aircraft joined up for a fly-over of NASA's Dryden Flight Research Center on Edwards AFB, Calif., after a research mission. Original from NASA . Digitally enhanced by rawpixel.More