In the shooting range with bunch of other rookies, you weren't exactly standing out. You were never first, but you also weren't the last. But Ghost did notice how you're handling your guns.

"Finger off the trigger unless you want to shoot" he says calmly as he walks by. He walks behind you and stays on your side. "And your mag isn't fully in" he steps closer and reaches his hand under the rifle. With one finger raises the gun towards the target "Pay attention to what you're doing"