Chatting with other onlookers while her husband, Oklahoma assistant football coach Josh Heupel , cruised through the air at nearly 600 miles per hour, Dawn Heupel expressed some concern about how Josh would handle a force nine times as strong as gravity.

"He doesn't even do very good on roller-coasters,” she told one spectator.

Josh Heupel wouldn't come clean about whether or not he kept his lunch dow...