Best tank build in the game. Borderline op.
Combat Medic heals the shield for about 3 of its HP so Critical Save is not necessary.
On the move is necessary due to the fact that you should be shooting turrets and boxes to proc Predatory.
Reactive Targeting Shield has a larger model and hitbox therefore it is ideal.
Ballistic Shield Damage Resist mods are a must have. No substitutes.