Bulgarian–American Joint Military Facilities were established by a Defence Cooperation Agreement signed by the United States and Bulgaria in April 2006. Under the agreement, U.S. forces will train at these bases, which remain under Bulgarian command and under the Bulgarian flag.

Black Sea Area Support Group (BS-ASG), is a United States European Command initiative executed by U.S. Army Europe (USAREUR) designed to strengthen relationships between the United States and its Eastern European allies. This program is an innovative element of the Theater Security Cooperation program that focuses on enhancing partner capacity and fostering regional cooperation. TF-East provides the U.S. and its partners in Romania and Bulgaria with training facilities and, currently, a periodic integrated combined staff that stands up to facilitate combined training.