It was witnessed by one group, then as it was pointed out a seperate group acknowledged the situation.

At first it was an item that looked liked a hanglider then as I pointed it out the group I was with they freaked out because it split into 2 seperate objects and almost simoultaneously they had split into formations that looked like very large triangles or hangliding shapes that were filled with pillow shapes evenly spaced to fill a hanglider shape and they floated by for about an hour or a little bit more.We were at a beach party that had a very large heat or light source at the begining it flew right over top of me showing the pillow formation, after that it just cruised around then up to 4 more figures of the same shape surfaced. Their is multiple witnesses all could be contacted as some time has passed since original incident.
Witness indicates that date of incident is approximate.  PD