More than 400 U.S. Marines have been deployed to Douglas, Arizona as part of a federal mission along the southern border. The Marines are working in the Tucson sector, focusing on infrastructure support — including road improvements and reinforcing existing barriers. Officials say their role is strictly support-based. They are not involved in law enforcement or immigration enforcement, which is handled by other agencies. Instead, this deployment is focused on logistics and helping maintain and strengthen infrastructure in the area. The Marines are part of a broader effort that has placed military personnel along different parts of the southern border in recent months. Local leaders say the deployment came with little advance notice, but the Marines are expected to remain in Douglas through at least September. For now, their presence marks another step in ongoing federal efforts to support operations along the Arizona border. What do you think about Marines being used in this ty...