Does somebody know what happened on the bridge at Enies Lobby after Usopps speech to Luffy (This isn't hell!), when the three Marines attacked him and he didn't manage to hit them? Suddenly he got rescued, but who did that? I guess it was Dragon but is there any proof?
Below are screenshots from chapter 309. At 15:43 Lucci releases the shot. At 15:46, Luffy dodges the shot and it goes upwards. At 15:56 it hits the Marines next to Usopp.