What was found
N499GS TRIP 8907, 2 OCT 2025, LEG 1 KBNA KMCN. NO PAX ONBOARD. DURING CRUISE AT FL450 THE CABIN BEGAN DEPRESSURIZING. RECEIVED CABIN ALTITUDE AMBER, THEN MASTER WARNING (WITHIN AN APPROXIMATELY ONE MINUTE OF EACH OTHER) AND PERFORMED MEMORY ITEMS FOR THE EMERGENCY DESCENT. I DECLARED AN EMERGENCY, RAN CHECKLISTS, AND DIVERTED TO A NEARBY SUITABLE AIRPORT (KMCN) WHERE THE WEATHER WAS BETTER THAN THE PLANNED DESTINATION AND THE AIRPORT IS TOWERED WITH LONGER RUNWAYS AND MORE SERVICES