This was around 10am bright warm sunny day. I was at Gibson ranch fishing with my son. I was watching a helicopter flying high just next to McClellan Park and notice it was loosing altitude fast. It looked like it had an issue but it stabilized. Right then something shiny cought my eye maybe a few thousand feet above that same area just on the edge of some clouds. I saw either square or diamond shaped objects. At first I saw 6 which then turned into 8. They were spinning in irregular patterns and the sun was reflecting off of them. I watched it do this dance for maybe 10sec and they seemed to have rapidly lifted straight bup to where I could not see them anymore. I looked around for a while and kept checking every few minutes but didn't see them again. By the time I thought to take a pic they were gone.