Sunday nights are the hottest of hot summer nights. It's the night that members of the Colorado Fire Tribe meet up at the Confluence Park boat launch to drum and dance with fire. These are spontaneous, informal gatherings -- no tickets, no reservations. People just wander up on the spectacular view of spinners rhythmically swinging flaming lanterns suspended on chains, twirling fiery batons and dancing with all manner of blazing accoutrements. When it all comes together, it's as much about athleticism and grace as it is about meditation and control. When it doesn't come together, it's mostly about leg scars, nasty head knots and pants on fire. Though seldom necessary, thick blankets are at the ready for stopping, dropping and rolling. And the roiling South Platte river is always available to cool any hotheads.