Jack Swigert
Astronaut
As Command Module Pilot on the their Apollo 13 mission, he was the one to report to Houston they had a problem.
After studying Aerospace engineering at the Rensselaer Polytechnic Institute, he applied to NASA's astronaut program and was selected for NASA Astronaut Group 5.
He was initially part of the backup crew for Apollo 13, but was selected after a prime crew member fell ill with the German Measles.
He grew up in Denver, Colorado.
James Lovell was the mission leader on the Apollo 13 flight.