Collision avoidance in the Swiss Valley
I've just enjoyed two days of glorious weather in the Valley. Things can get pretty busy there when the weather's as perfect as it's been. On one jump from the High Nose I saw a canopy that had clearly come from the regular Nose, and another already on the ground. I was going to be flying left into that area, so I checked with Air Glacier how many jumpers had called in from there. They said five, and sure enough a three-way soon launched. I waited a little, then flew my line. Shortly after landing another group jumped from the Nose. They'd seen my flight, so all went well, but I think this does highlight the importance of checking the airspace you're flying into.
Air Glacier will often be thoughtful enough to warn me about jumpers on the other side of the Valley, but the Nose still gets jumped a lot too. I think it's probably a good idea for everyone, whether tracking or wingsuiting, to ask Air Glacier about any recent calls from other jumpers. Hopefully this isn't too much extra effort for Air Glacier, and they'll soon get into the habit of giving you a quick summary of any other calls made in the last 5 or so minutes.
I know the chances of a midair collision are small, but I think you'll agree the consequences don't bear thinking about.