"Well if nopony else is going to do it, I guess I have to." Limestone shoved Pinkie aside and turned back to the mass of ponies behind her, "I need some mages. Do we have any mages here?" A couple dozen unicorns held their hooves up. "Great! I need the best of you at making shields across the front here." Limestone drew an imaginary line across the hallway, "When they bust through the door, we're all going to open fire on them, then you're going to shield us before they can shoot back. The rest of us are either going to use your shields, or whatever cover we can. You got it?"