Brazil Ministry of Defence announced on 4 January that the government will release an additional $140 million for SISFRON (Sistema Integrado de Monitoramento de Fronteiras) integrated border control system project. Consisting of radar units, electromagnetic sensors, tactical and satellite communication components, command and control centers and drones, SISFRON was designed to help security forces detect suspicious activities from distances up to 20 km.Â
An F-15EX Eagle II assigned to the 40th Flight Test Squadron, 96th Test Wing, out of Eglin Air Force Base, Fla., conducts aerial refueling operations above Northern California, May 14, 2021. The aircraft participated in exercise Northern Edge 21 in Alaska earlier this May. (U.S. Air Force photo by Ethan Wagner)