Kayakers at Great Falls

I often see people kayaking when I go to great falls.  Usually they are in the whitewater below the falls, but sometimes they go above the falls and come down on the Virginia side of the river.  Today I saw something different though.  I saw a group of 3 kayakers come down the biggest drop, along the Maryland shore. You can see the first kayak coming over the falls in the photo above

Take a look at this video I took.  About 8 seconds in the first kayak comes over the falls, then another, then another.  They regroup in the calmer water below then continue down and shoot through some intense white water at about 1 minute 20 seconds.