Aerial Rainbow, near the coast of MayoIn early 2013, I was invited to fly with Irish Lights on a helicopter maintenance run up the coast of Mayo. That winter had been relentless, storm after storm battering the coastline, and they needed to check lighthouses and navigation aids for damage. I was fortunate enough to be offered a seat. Somewhere out over the Atlantic we flew through a heavy squall. Rain hammering the fuselage, visibility gone. Then a break opened behind us and sunlight