The term DMZ PART is an acronym for 'Demilitarized ZONE Perimeter Access Route Technician'. This job involves maintaining and monitoring the security of a demilitarized ZONE, which is an area between two or more countries that is free from military activity. The technician is responsible for ensuring that no unauthorized personnel enter the ZONE and that all access points are secure. They also monitor the perimeter of the ZONE to detect any suspicious activity.