As Luke came out, Rhodey knowing his presence was appropriately announced, his music cut off. Of course who he actually was couldn't be seen and was unknown, however being raised in Philly this scene was only amazing in how everyone had banded together to him. 'Urban' environments held no terror for him and especially not while he was in his suit.
"Well if you're for hire someone has to come hire you some day, right Hero?"
His suit altered his voice much like Iron Man's did for him, although a different tone it wasn't possible to glean any information from it and most found it somewhere between creepy and intimidating. "I'm here to see if you're just going to stay inside or if you want to be a little more go get 'em."
There wasn't any further explaining necessary until Luke at least presented some interest. However, having dedicated himself to defending a neighborhood Rhodey found that pretty likely. He was almost ashamed Magneto had been in power for so long and, though usually a very laid back guy, if he was to be a driving force in this he would be. It was time that the people that could helped stop what was shaping up to be another atrocity. No one would ever imagine it would be acceptable to let slavery or genocide thrive but that was what was going to happen if they didn't move soon.