SkyWest Airlines Flight UA5956, operating as United Express, departed Idaho Falls Regional Airport at 05:12 local time on June 2, 2025, en route to Denver International Airport. Shortly after take-off, the flight crew declared an emergency due to a pressurization system issue. This incident underscores the importance of redundant systems in aviation safety. While the failure of a single pack can be managed, the simultaneous unavailability of both necessitates immediate action to ensure cabin pressure remains within safe limits.