Long before he became the interim head coach of the Miami Dolphins, Dan Campbell was an NFL tight end for four different organizations. Among his teammates and coaches, Campbell was known as one of the toughest guys in the league.
How tough? Tough enough to have his appendix rupture in the middle of a flight and say nothing about it.
In 2005, Campbell and fellow tight ends Jason Witten and Sean Ryan were headed off on a flight together to a Bill Parcells-led training camp with the Dallas Cowboys. When their plane arrived in California, Campbell was not present at the first meeting for the position group.