"Placed equipment and drones have increased protection from damage and will also persist through death, which gives you 1 extra piece of equipment you can have active."
— In-game description.
Hardened is a trait for Stryker in Call of Duty: Infinite Warfare. The user's equipment will take more hits before being destroyed by enemy fire, allowing the player to take much more advantage of the equipment he brings into the match. Dome Shields especially receive a greater benefit of protecting friendlies for longer from incoming enemy fire. Other equipment such as Trip Mines and Cryo Mines will stay on the field through the first death after placement, allowing the user to have two at a time without using points in their create-a-class to allow more flexibility.