![(29 May 1982) --- Astronauts Thomas K. (Ken) Mattingly II, center foreground, and Henry W. Hartsfield Jr., both wearing pressure garments, leave the operations and checkout building at KSC to board a special van that will take them to Launch Pad 39A for a ... (29 May 1982) --- Astronauts Thomas K. (Ken) Mattingly II, center foreground, and Henry W. Hartsfield Jr., both wearing pressure garments, leave the operations and checkout building at KSC to board a special van that will take them to Launch Pad 39A for a ...](https://c8.alamy.com/zooms/6/2696107ecfc047c7b7af69765e9f426e/t28pn5.jpg)
(29 May 1982) --- Astronauts Thomas K. (Ken) Mattingly II, center foreground, and Henry W. Hartsfield Jr., both wearing pressure garments, leave the operations and checkout building at KSC to board a special van that will take them to Launch Pad 39A for a ...
![Failure is Not an Option: Celebrating the 50th Anniversary of Apollo 13: Pt. 3: Ken Mattingly | Jonathon D. Svendsen Failure is Not an Option: Celebrating the 50th Anniversary of Apollo 13: Pt. 3: Ken Mattingly | Jonathon D. Svendsen](https://jonathondsvendsen.files.wordpress.com/2020/06/ken-mattingly.png?w=1024)
Failure is Not an Option: Celebrating the 50th Anniversary of Apollo 13: Pt. 3: Ken Mattingly | Jonathon D. Svendsen
![File:Thomas Mattingly and Henry Hartsfield in front of the Space Shuttle vehicle.jpg - Wikimedia Commons File:Thomas Mattingly and Henry Hartsfield in front of the Space Shuttle vehicle.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/a2/Thomas_Mattingly_and_Henry_Hartsfield_in_front_of_the_Space_Shuttle_vehicle.jpg)
File:Thomas Mattingly and Henry Hartsfield in front of the Space Shuttle vehicle.jpg - Wikimedia Commons
![Astronaut Thomas K. (Ken) Mattingly II, who was scheduled as a prime crew member for the Apollo 13 lunar landing mission but was replaced in the final hours when it was discovered Astronaut Thomas K. (Ken) Mattingly II, who was scheduled as a prime crew member for the Apollo 13 lunar landing mission but was replaced in the final hours when it was discovered](https://c8.alamy.com/zooms/9/f7279ba0aa974fa19c591bd7b58723f0/t28py7.jpg)