The Glare Shield was located and then it was drilled using the holes in the Longerons as guides. Next, the three firewall angle pieces were installed starting first with the center firewall angle, SNX-F07-09, followed by the side firewall angles, SNX-F07-10. The pieces were clamped in place, drilled and cleco'd to both the firewall and glare shield. Care was taken to make sure the glare shield was centered.