Can you find the missing coaches in this NFL class photo?
Most of the NFL's head coaches assembled for a group photo on Monday in Boca Raton, Fla. at the annual owner's meetings.
Coaches will meet with the media over breakfast on Tuesday and Wednesday and NFL Vice President of Officiating Dean Blandino will attempt to unravel the mystery of what constitutes a catch.
Expert level: Do it in 1 minute.
There's one semi-spoiler out there as the Detroit Lions have helped Lions fans identify their own head coach: