Comtech supports services in 23 professional support service functional areas including: Engineering, Financial Management, and Program Management. The Navy Systems Commands (NAVSEA, NAVAIR, NAVWAR, NAVFAC, and NAVSUP), the Office of Naval Research (ONR), Military Sealift Command (MSC), and the United States Marine Corps (USMC) compete their service requirements amongst 1800+ SeaPort-NxG Indefinite Delivery Indefinite Quantity (IDIQ) multiple award contract holders.