It appears to me that the lighting on the head is inconsistent with the other subjects. Although the entire group receives mottled lighting — they may be in the partial shadowing of a tree — the consistent lighting is from the subjects’ right.
BO’s lighting is from above, not the right. The guy to Barry’s right also has NO highlights; weird. Other than the women at Barry’s feet (?) nobody is smiling. I guess that is what makes people happy.
That is the most off thing in the photo.