MARINE CORPS BASE TWENTYNINE PALMS, CA -- Defense Secretary Ash Carter says aviation safety and readiness are among his top priorities, following a string of aircraft mishaps across the Marine Corps over the past year. “Aviation safety and aviation readiness are top priorities for me and for the commandant and for our Marine Corps,” Carter told reporters following a troop talk here, where in late July, an F/A-18 crash killed a Marine pilot. Last week, another mishap occurred nearby, when...