This skydiver had a snappy premature opening while freeflying, followed by a toggle fire. Not fun. He was flying a demo canopy, which had a smaller pilot chute that was too loose in the BOC. As he went into a stand, the pilot chute caught some air and out it came.
Gear checks, gear checks, gear checks. If your pilot chute is the wrong size or you have a loose BOC, don’t jump it — fix it.