Vikings mailbag: Position battles? RB split? Judging J.J. McCarthy?

Ben Goessling, Andrew Krammer and Emily Leiker open the offseason mailbag that's overflowing with your questions. They start with the outlook at safety, where they're replacing Cam Bynum, as well as whether rookie Tai Felton can earn playing time. What about the home run power at running back? How much less will Aaron Jones play? And how are the Vikings judging J.J. McCarthy's progress?