If I have 4++ shield drones as the closest guys to a firing model they take ALL the wounds until they fail correct instead of my 3+ save guys correct? So if he does 15 wounds do a squad of 5 each model doesnt get 3 wounds, they get allocated from the closest forward right?
Yes. A single wound is allocated to the closest model. If the model is still alive, then another single wound is allocated to that model, etc. Once that model dies, then the next closest model is allocated a single wound, etc....
If the crises suit is behind 3 shield drones, then the shield drones will die one at a time, before the crises suit gets any wounds allocated to him.
(Keep in mind, barrage weapons, precision shots, focus fire, Line of Sight,and perhaps a few other things will mess with this.