Hospital Corpsman 2nd Class Vincent Undis demonstrates proper abdominal thrusts of an unconscious casualty due to choking during a basic first aid course taught by corpsmen from the Shock Trauma Platoon, Black Sea Rotational Force 12 in Constanta, Romania July 25. The class was taught to volunteers from a local special needs placement center for adults and children. Black Sea Rotational Force 12 is a Special-Purpose Marine Air-Ground Task Force with crisis response capabilities deployed to the region to enhance interoperability and promote regional stability.