SKRUNDA, Latvia – As part of exercise Baltic Operations (BALTOPS) 2025, U.S. Navy Seabees, U.S. Marines from 8th Engineer Support Battalion (ESB), and Latvian Army engineers are constructing a fortified trench network designed for survivability in a drone-contested battlespace. The project serves both as a realistic rehearsal and a proof of concept for how modern combat engineers support maneuverability, concealment, and endurance in multi-domain operations.