Visible crew/equipment: When they guys meet up with Caesar, Barney says "You walked into that one." When he does you can see 2 people reflected in his sunglasses, other Expendables members, but you can also see what appears to be a camera outside the boat. (00:13:20)
Visible crew/equipment: When Barney walks out the hospital, look at the doors and you can see a big crowd reflected watching the filming. (00:27:15)