USMC Atlantic Nomads Mass One (USMC) The USMC Atlantic Nomads Mass One refers to a United States Marine Corps (USMC) training unit based in the Atlantic region. This unit, part of the 2nd Marine Expeditionary Force (MEF), specializes in amphibious operations and conducting various types of military training exercises along the East Coast and in the Atlantic Ocean. The 'Nomads' moniker signifies their ability to operate from diverse locations, making them highly adaptable and mobile. Mass One is one of several such units operating under the USMC's Atlantic fleet. This specific unit focuses on honing the skills necessary for rapid deployment and sustained operations in amphibious environments. The primary goal of this unit is to maintain readiness and preparedness for various military missions as required by the USMC.