"We knew we were sitting together in the control room and we thought it would be fun for both of us," said Brooke, a Chiefs fan. "We saw something we liked from a previous game and we kind of imitated it."
Gene, a supporter of the New England Patriots, said that makes sense because the two are constantly talking about football and "touchdown celebrations are back" in vogue in the NFL.
They started planning the handshake about six weeks ago, studying and practicing Goodwin and Bourne's video movements.
"It's an excellent touchdown dance," Brooke said.
When they do not perfect the art of NFL handshakes, Brooke and Gene are engineers in Entry, Descent and Landing (EDL) systems. EDL engineers are responsible for bringing the spacecraft up from the top of the atmosphere of a planet to the surface safely.
As for their handshake, now world famous, they are satisfied with it, but they are not convinced that it is ready for the pros.
"(Goodwin) did it better than we did," Gene said.
Good people on the Internet might disagree.
CNN's Ashley Strickland contributed to this report.