How to get electronic sensors in DMZ in Modern Warfare 4

This guide explains where to find electronic sensors in Modern Warfare 4's DMZ mode, as they're needed for various upgrades. Every single player will need to find electronic sensors in Call of Duty: Modern Warfare 4's DMZ mode, because they're an essential resource early on. They're used for all sorts of upgrades and recipes, including increasing your stash size, unlocking additional purchase options at the vendor, crafting various field upgrades and fire support, and more.