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3w ago

U.S. Navy Opens Fourth National Defense Area in Yuma

The new 32-mile military zone enables Joint Task Force–Southern Border to conduct patrols, temporary detentions, barrier construction next to the Barry M. Goldwater Range.

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Overview

  • Joint Task Force–Southern Border troops will patrol the 32-mile Yuma zone, temporarily detain unauthorized individuals, and maintain and upgrade border barriers adjacent to Marine Corps Air Station Yuma.
  • The Yuma NDA marks the fourth such designation since April, and together these zones cover about one-third of the U.S.-Mexico border with roughly 8,500 active-duty personnel under U.S. Northern Command.
  • Unauthorized crossings into National Defense Areas now carry military trespassing charges in addition to immigration violations.
  • These designations operate under a 2025 national emergency declaration backing President Trump’s military buffer strategy and extend service-branch jurisdictions to support DHS and CBP operations.
  • Civil-liberties organizations and federal public defenders are challenging the legality of NDAs in court, citing the Posse Comitatus Act’s restrictions on military involvement in civilian law enforcement.