Brutus security plans Challenge

Now i am not gonna tell every location, i am gonna tell you which location is easier, here how to do it, go to The Yacht and land underneath it in the front of the yacht, break the wall that looks like it's something that can be opened, when inside you can see two boats and a henchmen chest go through the door until you see a turret or the hallway to the vault don't go there look behind you will find like a big machine with a monitor, if you can interact with it, get the security plans and go to Steamy Stacks, here is how they look like 

when in Steamy Stacks just find the drop boxes and give it to the drop boxes, and you got Brutus the shadow or ghost variant. Here are the drop boxes locations in Steamy Stacks.