This location is connected to the Mass Pike Tunnel through the utility tunnel. As soon as you get in, you'll be ambushed by Mole Rat Brood Mothers. There's a chance that you'll encounter a legendary mole rat here. After killing them, you can loot the ammo boxes and activate the protectron from the unprotected terminal. The second floor has an Expert steamer trunk. You can also push a large button to open the warehouse's gate.