Sal is an associate of Firefly.
Working with Firefly
Many years later, Sal worked a mission with a new guy under the command of Firefly. He told the new guy all about Batman and how he had grown to be brutal. Once Firefly had done, he let the two men leave. However, before they could, Batman showed up. He fought with Firefly and beat him down, before tying up the two men for the police.