View source for HacDC Spaceblimp

; Why use helium instead of hydrogen?
: Wouldn't you get more lift?  Leakage maybe?

; Are there flight requirements other than avoiding restricted airspace?
: Do you have to notify anyone or announce the release on the radio?
=Photograph==
I uploaded the group photograph at 
https://commons.wikimedia.org/wiki/File:2016_SpaceBlimp_VI_on_27_September_2016.jpg#.7B.7Bint:license-header.7D.7D
on Wikimedia Commons. Geraldshields11