Shea worked as a runner in a drug enterprise.

After Wes finishes a game of basketball, he runs into Shea. The boys are about the same age. Shea says that he just finished working, and Wes can tell from his outfit—"black jeans, a white tank top, and a black backpack"—what kind of work Shea does.

He says Shea is a runner. It's an entry-level job working with drug dealers. Local suppliers package the drugs they get from the larger organizations, but they need to get those packages to the local dealers without arousing suspicion. They hire kids who look like they wouldn't be working for drug dealers so that police officers are less likely to stop them on the streets.

According to Wes, Shea was making decent money. However, they were seeing less of him around because he had so much less time.