Cho and Rigsby walked along the street, looking at all of the hookers on the street. They were looking for a particular hooker for their current case- they had solid info that this hooker knew something about a suspect they were looking for, a notorious drug dealer and gang leader.

And so, his eyes were scanning the hookers along the street for this particular person. He was hoping he and Rigsby didn't have to part with too much of their money...