I still got most of my old ones
I keep them in my big pile of stash. However, there are beginning to get too many of them now.If you belong to US Power Squadron, or know someone who is, you can contact them. Usually, when they have boating safety classes, they will sometime setup a demo, and practice firing of flares. Our local squadron has scheduled with our fire department, and all met at the fire department parking lot, and fired them off. Many were duds, but that was ok. The fire department personnel were standing by, watching, and giving advices when needed.