I WAS THERE! How David Blaine flew helium balloons to the height of jets (and jumped)

Check out David Blaine’s video with Physics Girl’s Dianna Cowern: ASCENSION full Livestream: David Blaine casually floated up to 25,000ft over the Arizona desert holding 52 helium balloons. I was invited to witness the testing and preparation! Thanks to David Blaine, Luke Aikins, and the rest of the team for having us and for taking such good health and safety precautions! Thanks to Kyle Kitzmiller. http://physics