As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE FROM KAFW TO KJFK LEFT ENGINE SHUTDOWN AND LEFT ENGINE FUEL VALVE EICAS MESSAGE DISPLAYED. AT FL210 (CLIMBOUT) EGT EXCEEDED AT 831, LEFT THRUST REVERSER WAS REDUCED WITH LEFT ENGINE FUEL VALVE LIGHT ON. CREW COMPLIED WITH QRH PROCEDURES. AIR TURN BACK TO DESTINATION STATION KAFW WITH EMERGENCY DECLARATION. LANDING UNEVENTFUL WITH NO ADDITIONAL PRECAUTIONARY ACTIONS. AIRCRAFT GROUNDED FOR UNSCHEDULED MAINTENANCE. WORK IN PROGRESS.