Lights in the sky during Air Show

Sitting outside, clear day, no clouds. Lights appeared in the sky suddenly, there were 10 to 12 lights, seemed to move in formation, we watched and all of a sudden they would all disappear and a second later reappear. This was seen in an area where the Blue Angels were flying that afternoon. Lights hovered for at least 10 minutes above us and then started moving to the south slowly. Another object was spotted 25 minutes later moving across the sky, was different from lights.