As J.J. McCarthy prepares for his first training camp with the Vikings, national critics are questioning his arm — but Justin Jefferson and Harrison Smith aren’t buying it. In fact, Jefferson says the rookie QB throws too hard.

Minnesota Vikings star receiver Justin Jefferson has spent a significant amount of time this offseason with quarterback J.J. McCarthy, aiming to build chemistry both on and off the field.

Speaking of Minnesota Vikings QB J.J. McCarthy, WR Justin Jefferson said "I want him to be just as confident as I am of him."