It's not always easy being an NFL head coach. Sure, you get paid millions of dollars to run one of 32 teams and when you win, you get called a genius. But when you don't win, you get the heat for it. Not the quarterback, the running back or the defense. The head coach does. Why? Most fans feel that the coach needs to have his players more prepared given that they are a professional team and finishing below .500 is just un-excusable. Nevermind that your team goes through injuries, because no fan wants to hear about it. All teams at one point or another go through injuries. In today's NFL, it's a win or get out of here type league, and the coaches know this. When the 2013 season kicks off, there will be five current head coaches who will enter the season the hot seat and risk getting fired either during the season or at the conclusion of it. Here's a list of the five coaches who may need to polish the resume soon.