The Clark County Fire Department welcomed a brand new fire chief on Tuesday.County commissioners promoted Billy Samuels to the top job inside the department. Samuels brings more than 20 years of service to Southern Nevada, starting as a firefighter and climbing the ranks from captain to battalion chief. "24 years ago, the Clark County Fire Department took a chance on me. They took a chance on a 26-year-old local kid, and that day, I said I won't…