There's nothing wrong with it, but it's curiously uninvolving. I don't feel any dread. I can't envision the gang members.
The problem isn't the sentence itself but its nature. It tells instead of shows. ("Oh, *that's* what it means!")
Your scene is from one character's point of view, I bet. We know what that character sees and says. Add what he thinks, remembers, fears, hopes, desires, etc. Get yourself more firmly inside that character's head and tell us what he sees and hear as the gang comes closer--and most important, what he thinks as it happens, what he's afraid (or hopes?) will happen.