Proper noun
Swigert (plural Swigerts)
A surname from German.
The mission was commanded by James A. Lovell with John L. "Jack" Swigert as Command Module Pilot and Fred W. Haise as Lunar Module Pilot. Source: Internet
An extra $536.05 was included for battery charging, oxygen, and an "additional guest in room" (Swigert). Source: Internet
This 'replacement' astronaut was a nod to Jack Swigert, who replaced Ken Mattingly shortly before the launch in 1970. Source: Internet