I went out on friends and family cruise on the Stennis when she was home ported in San Diego. We were more than 50 miles off the coast when an F-14 flew low next to the ship and broke the sound barrier. When the aircraft broke the sound barrier there was a water vapor ring where the jet passed, but it was not rainbow colored.
Rainbows form when the sun is to your back and the water droplets/mists are in front. They are the reflected sunlight being prismed by the droplet. I amazed one of my neighborhood children when I was spraying down my driveway and asked her if she wanted to see a rainbow, and made one for her on the spot, on a sunny day.
I love the look of wonder on a child’s face.
DK