Harmon went down with a non-contact injury in the second half and had to be carted from the field. That's almost always a bad sign, but Harmon is built different, as the kids say. After being inactive for the first game of his career, Harmon has played in 153 consecutive games. He may have just been dealing with some bad cramps.

Harmon was running to help make a tackle but appeared to suffer a non-contact injury as he approached the action. He went down and the cart had to be brought out the take him to the locker room. Harmon did manage to stand up and walk over to the cart. It's unlikely he returns in this game. 

Harmon was a 17-game starter for the Falcons last season, defending five passes and picking off two passes. He's fallen off in PFF's coverage rating over the past two years with Detroit and Atlanta, outside of the New England cocoon. It's unsurprising that Patriots West settled on Harmon, who figures to push Johnathan Abram and Trevon Moehrig for playing time at deep safety. 

He'll join Erik Harris as a veteran solution off the team's bench and in the secondary. Harmon, 30, most recently logged a career-high 1,103 defensive snaps with the Lions, soaking up much more than his previous high (702) due to the team's myriad of injuries. He'll also help mentor a young (and rebuilding) Falcons defensive unit.