They believed San Diego needed a swing dance that showed up every Thursday regardless of what else was happening — not seasonal, not monthly, not dependent on a promoter deciding it was worth running. Just a weekly that committed to being there. The Firehouse Swing Dance has made that argument every Thursday since 1998 — the largest weekly swing dance in San Diego. Classes run from 7 to 8 PM (beginner Lindy Hop, included with entry), social dancing from 8 PM to 11 PM. Live bands when the calendar allows. The venue is Champion Ballroom at Ruffin Road — a dedicated dance space, not a bar that pushes the tables …