[guineapig]

At 0:46 the gunner moves his sites off the camera man on to the guys you have in your picture.
He keeps an on these guys for a good while.
At 1:14 the gunner completely loses site of the guy in your picture.
At 1:16 He has his sites on one of the guys next to him.
At 1:20 he moves his target over to the corner. At this point he has switched his target to one of the 2 camera men that were heading in that direction.

Looks like the gunner got distracted by the helicopter circling the building or something because he definitely switches targets 3 times in those 30 seconds.