The Department of Homeland Security (DHS) Science and Technology Directorate (S&T) is evaluating cutting-edge air domain awareness technologies to support DHS’s mission to protect the airspace along our northern border with Canada. Working with U.S. Customs and Border Protection, the U.S. Coast Guard, the Department of Defense, and the Federal Aviation Administration to develop requirements and testing criteria, S&T’s National Urban Security Technology Laboratory led a test team that also included the Montana National Guard, Northern Plains UAS Test Site, and MITRE.