Dick lunged after Duo, fast for a non-ninja, even injured.
It was probably only that reason that he got as far as he did (three whole steps) before Kisame's hand was on his shoulder, yanking him back just as the ground where he'd leapt to exploded, light shattering dirt and stone, flinging up mud.
"Duo!" Dick bellowed.
The shot missed Duo.
One of Dick's hands was wrapped around Kisame's fingers, frozen in place as he warred with himself; fling the hand off and go after the kid, or stand perfectly still in the knowledge that alone Duo would probably continue to be ignored, but Dick's presence might make things worse.
His pupils dilated, his breathing coming faster as every muscle contracted in preparation to move.
Dick's fingers tapped a double combination, and the zip-line dropped into his hand. If he had to, he might be able to essentially lasso Duo and drag him back extra fast. Extra extra fast if he could convince Kisame to grab the handle and run in the other direction while it reeled the kid in.
As long as the robot didn't shoot because of that.
Dick shifted slowly to one side--slowly so Kisame wouldn't grab him again--until he was at an angle and Duo's own forward momentum would carry him into a shot across his belly, making the zipline wrap around his waist.