Reveille/Retreat: Respecting the flag
PETERSON AIR FORCE BASE, Colo. – The American flag is flown outside of 21st Space Wing headquarters, July 2, 2018. The colors of the flag have important meanings. Red symbolizes hardiness and valor, white symbolizes purity and innocence and blue represents vigilance, perseverance and justice. (U.S. Air Force photo by Robb Lingley)