U.S. Army Spc. Antonio Perez (left) explains the capabilities of a high-mobility engineer excavator to Brazilian Army Gen. Júlio Cesar de Arruda, Chief of the Department of Engineering and Construction, during a demonstration Nov. 18, 2021, at Fort Belvoir, Virginia. The demonstration took place as part of an annual meeting between the Brazilian and U.S. Chiefs of Engineers to expand partnership and increase interoperability between the two countries. (U.S. Army photo by Maj. Grace Geiger) (This photo has been altered for security purposes by blurring out identification badges.)