President Joe Biden on Tuesday bestowed the Medal of Honor to four Army veterans who fought in the Vietnam War, upgrading previous honors they had received for their acts of valor.

The individuals who received the medal – the most prestigious decoration in the US military – are Staff Sergeant Edward N. Kaneshiro, Specialist Five Dwight W. Birdwell, Specialist Five Dennis M. Fujii and retired Major John J. Duffy.

“They stood in the way of danger, risked everything … to defend our nation and our values,” Biden said during the ceremony at the White House. “However, not every service member has received the full recognition