President Donald J. Trump presents the Medal of Honor to Valerie Nessel, the spouse of U.S. Air Force Tech. Sgt. John Chapman, during a ceremony at the White House in Washington, D.C., Aug. 22, 2018. Sergeant Chapman was posthumously awarded the Medal of Honor for actions on Takur Ghar mountain in Afghanistan on March 4, 2002, an elite special operations team was ambushed by the enemy and came under heavy fire from multiple directions. Chapman immediately charged an enemy bunker through thigh-deep snow and killed all enemy occupants. Courageously moving from cover to assault a second machine gun bunker, he was injured by enemy fire. Despite severe wounds, he fought relentlessly, sustaining a violent engagement with multiple enemy personnel before making the ultimate sacrifice. With his last actions he saved the lives of his teammates. (U.S. Air Force photo by Wayne A. Clark)