This order makes it U.S. policy for the Armed Forces to prioritize patrolling the country's borders. The order directs the Secretary of Defense to present a revised plan to the President within 10 days that assigns NORTHCOM (the U.S. Northern Command, based in Colorado) a mission of "seal[ing] the borders," presumably both the northern and southern borders. It also adds three requirements to internal Department of Defense (DoD) guidance documents. NORTHCOM must engage in strategic, full-scale military planning to "seal the borders" and present an estimate to the Secretary within 30 days. NORTHCOM must also plan to ensure "southern border security" over the long term, and continuously assess other options to prevent people from crossing the borders.