Empty all items from the interior of the cabinets.
Locate the screws along the top and side walls of the cabinets.
Have an assistant stand and hold the bottoms of the hanging cabinets in case they shift. Then loosen the screws on the interior side walls of the cabinets that hold the assembly together.
Remove the screws along the tops of the cabinet. Have an assistant hold the cabinets up while you remove the screws. Only remove one cabinet at a time.
Continue to remove the screws inside all of the cabinets and slowly lower them away from the bulkhead.
Remove any wall anchors left behind by pulling them out with needle-nose pliers.