Dick had peeked out when the gunfire stopped turning his shelter into swiss cheese, then had promptly ducked and covered his ears when she screamed. Really, she knew where to point that voice of hers, but why take a chance?
When she called to him, he hopped out of his hiding place, landing crouched on top of the rail crate. "Man, if I could bottle that voice," he said with a tilted smile, looking at the thugs groaning on the ground. "Oh, look, a few of you are still conscious!" He trot over to where the two thieves he had tangled earlier were still squirming on the ground. He pulled out some zip ties, securing them and patting them down quickly. "It's so nice of you fellows to drop by. Really. Absolutely heart warming. Now, considering that our arrival kept you boys from being mowed down by your rivals here, how about a show of appreciation and telling what you know?"
"Not tellin' you nuthin', freak."
Nightwing set a hand to his chest. "You have it wrong, I'm afraid. I'm just visiting, and there is etiquette to consider. You'll be spilling to her." He thumbed toward Black Canary.
The gun runner swallowed audibly. Nightwing gave a small bow as though to allow her the floor to the center ring before moving on to secure the rest of the criminals, touching his mask now and then to record the scene.
~~~
They watched the police arrive to mop up the scene from a distance. Dick held his palm up. "So... don't suppose you can maybe not tell Batman about that?" He was referring to not being leery enough to prepare in case more thugs arrived.