This is so sad.
Alexander Polli, a world-renowned skydiver and a pioneer in BASE jumping, has died in the French Alps after a wingsuit crash on Monday. He was just 31 years old.
Polli apparently crashed into a tree while jumping in an area near Chamonix, France, that is popular, but VERY dangerous, for BASE jumpers.
One search and rescue official told NBC News that this isn't the first time they have been called out to the area: