This is what I and Privateer are talking about
:
http://www.subsim.com/radioroom/show...postcount=3770
...and here is one of the last version of the barrage balloon recently added to OHII (after import/export in max):
http://www.mediafire.com/download/v9...inal_parts.rar
P.S: I will post later a mesh containing smoothing groups