Square waves form when two wave systems collide, creating dangerous ocean patterns that threaten boats and swimmers.

On Tuesday (May 7), Lisa posted photos from the event on Instagram, writing that she felt "Honored to wave the flag at my ... and miniskirt set - holds her checkered flag out the window of the ...

In one photo, she poses with Red Bull driver Max Verstappen, while in another, she waves the checkered flag from the pit wall, marking the end of the race. In a quick snap, the singer known for ...