Even with the heavy, thirty pound 'gold' prop proton pack and its batteries and moving parts, to realize that a 'real' proton pack would weigh about twice that much, and our heroes wore them all the way up the stairs to the forty-first floor of Spook Central is certainly a reality check.
Haven't you seen hoe fit the Ghostbusters were? They could beat schwarzenegger and Stallone while wearing the proton packs and running up the stairs
