On a serious note out of pure curiosity. What were the drills he was teaching you in the above photos ?
Unless In close quarters fighting like Clearing a room
You shouldnt be approaching a enemy target firing over your colleagues shoulder .
One burst of automatic fire would kill both of you which isn’t great the first photo for example . The entire 4 on the right would likely be down in the first few seconds of an engagement , I assume your girlfriend and the guy far left would be the only ones with any chance of getting down and returning fire . But other pictures you seem to have grasped that concept and a mix of you are prone and advancing . (Suppress and advance ) .
Just be interesting to know what the instructor was teaching you