CARLATA BRADLEY

On this day in 2003, NASA’s space shuttle Columbia exploded while
re-entering the Earth’s atmosphere. All seven astronauts on board
were killed.

Helmet found in a field after the space shuttle Columbia disaster.

Memorial at the Columbia Debris Site.

During the Vietnam War on this day in 1968, South Vietnamese
National Police Chief Brig. Gen. Nguyen Ngoc Loan executed a
Viet Cong officer with a pistol shot to the head. The scene was
captured in a news photograph shown above.

Vietcong officer Nguyen Van Lem minutes prior to his execution.