Use the space bar to learn how to make the Nakamura Lock
Thanks to https://www.google.com/search?q=nakamura+lock+distance&biw=1760&bih=853&source=lnms&tbm=isch&sa=X&ved=0ahUKEwibx8vBz7zKAhUQ9WMKHfQRCSkQ_AUIBigB#imgrc=850KV4jJ8wyDDM%3A https://www.google.com/search?q=airplane&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiZ5-m17b7KAhVR92MKHXNJA4UQ_AUIBygB&biw=1760&bih=853#tbm=isch&q=airplane+no+background&imgrc=i-WrR7OxGoKIkM%3A for their images and Ejij for his amazing paper airplane.