Just watching the hulking C-5M Super Galaxy and C-17 Globemaster III cargo planes maneuvering across the skies of Dover on a normal day is enough to take a person’s breath away. Sprinkle in extremely rare co-headline performances by the U.S. Air Force Thunderbirds and U.S. Navy Blue Angels aerial demonstration teams — and a wide array of other sights and sounds — and this weekend’s Thunder Over Dover Air Show and Open House was one for the ages.