it was a Veterans Combine. Saw some talking head saying that it's a nice gesture but it's not really going to help anyone much because teams already have all the tape they need on these players and there is a reason they aren't on a team.
but i don't get it on some of them such as Carricker. dude just did 40 reps on the bench, the highest guy at the 2015 combine only did 37 and the highest DT/NT only did 35. i'd think you could sign a guy like that at a veteran minimum and have a better more ready to play player than anyone you could get in the draft.