Naval Support Activity New Orleans was a United States Navy installation until September 2011. During its time in operation, it was the largest military installation in greater New Orleans. It hosts activities for other branches of service and federal agencies. The installation met the needs of military personnel, both in and behind the battle. Home to nearly 3900 active-duty and 2,700 civilian personnel, the facility spreads over both banks of the Mississippi River. NSA New Orleans was previously home to: