펜타곤
In September 2001, HCS-4 was winding down a successful mini-detachment to Ft. Belvior, Virginia when the morning of September 11th, 2001 they received word of a terrorist attack on The Pentagon. Detachment personnel quickly loaded up one aircraft with medical supplies and launched it to the Pentagon. Upon arriving at the Pentagon the aircraft and crew maintained a standby alert posture for the next few days.