I challenge everyone that's never called a football game to go sign up for their local high school area to call games. I did it for 8 years. You will learn from wherever you work on the field to call YOUR calls. I don't give a rats arse what Vinovich seen or didn't, he won't make a PI call. I was an umpire in the middle of the field in HS football. I saw some plays that looked like PI from my perspective. But guess what, it wasn't my call to make. So I didn't. So I challenge ALL who thinks they know what should happen, sign up, pick up a rule book, learn the game from the ref aspect, and see how it goes. You will get a different perspective. And oh by the way, throw a flag that's not YOURS to throw, and let me know how long you make it.