This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
observation balloon observationballoon the great war thegreatwar great war greatwar world war worldwari world war one worldwarone the first world war thefirstworldwar wwi ww lighter than air lighterthanair lta military aviation militaryaviation parachute View of German observation balloon bursting into flames with German observer