How to  build the shield in classified  in Call of Duty Black Ops 4


Step 1: build up points and unlock doors
Step 2: on the third floor it is usually by the teleport station or in the power room


Step 3: on floor 1 there is a part in the smallest room, it is usually next to the door on the left














Step 4: on floor 2 the last part is in the side of the wall on the bottom  of the war room

Step 5: take all your parts to a build station and build the shield