"You have seven officials and you have 22 players so you can't just focus on one area," Blandino said. "We have to look at several areas ... (The referee is) looking right through and he can see the left tackle and he can also for the most part see the quarterback in that same line of vision, so he doesn't have to turn his head. He should be able to see everything in his line of sight but that's something that we're looking at."