GSBC 2018 flight will down is closed but don't forget to submit for prizes!
Best Design and Best Educational Initiative require online submissions through your team page by May 15th. https://community.balloonchallenge.org/t/gsbc-2018-prizes-are-here/1300
Best photo requires posting a picture on the forum by 5/30 and voting through your likes! Don't forget to do both of these!