Marines ‘invade’ Catalina Island to fix crumbling airstrip at Airport in the Sky

The sky was a gloomy gunmetal gray Monday as dozens of U.S. Marines swarmed the notoriously tricky airstrip high atop Santa Catalina Island.

By days end, the Airport in the Sky resembled a war zone full of heavy machinery, trucks, troops in camouflage and green military tents.

The squadron was…