The last African-American astronaut to fly on a Space Shuttle mission. He served as a Director of Operations at Yuri Gagarin Cosmonauts Training Center in Russia.
He became a Second Lieutenant in the United States Air Force after graduating from the Air Force Academy.
He became the 200th man to walk in space during the STS-133 mission in 2011.
He married and had three children.
He and Mae Carol Jemison are notable African African astronauts.