Eminem performs during The Concert for Valor in Washington, D.C. Nov. 11, 2014. Original public domain image from Flickr https://www.rawpixel.com/image/3388474/free-photo-image-rapper-artist-bruce-springsteenFree Image from public domain licenseRihanna sings during The Concert for Valor in Washington, D.C. Nov. 11, 2014. Original public domain image from Flickr https://www.rawpixel.com/image/3388392/free-photo-image-music-stage-microphoneFree Image from public domain licenseMetallica’s lead singer James Hefield plays guitar during The Concert for Valor in Washington, D.C. Nov. 11, 2014.… https://www.rawpixel.com/image/3388401/free-photo-image-guitar-artist-audienceFree Image from public domain license