I think Will’s going to shoot someone to impress Hannibal…
Gif credit (sweetconformity)
Not to impress Hannibal, I think it is more “coincidental” than to try to impress him. We’ve read the synopsis of the episode, and I’m sure this scene will be some sort of parallel with the shooting at the Hobbs’ house. Will instead of being traumatized again, looks angry, and Hannibal is with him again, as @idontfindyouthatinteresting said “touching is a manipulative technique”, thus Hannibal is trying to give the sense of confort, that this time, Will doesn’t need.