As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AT FLIGHT LEVEL 390 FIRST OFFICERS WINDSHIELD SHATTERED. THERE WAS NO FORWARD VISIBILITY THROUGH WINDSHIELD. FLIGHT DESCENDED TO FLIGHT LEVEL 230. AIRCRAFT REQUIRED TO LAND AT ALTERNATE BASE. UPON ARRIVAL MAINTENANCE INSTALLED NEW WINDSHIELD.