I finished drilling out the key rivets from the aft fuselage skin/turtle deck/longeron junction. Once drilled, I tapped them to accept the screws to hold on the emp fairing bottom strip, which runs beneath the horizontal stabilizer.
Drilling out key rivets from the fuselage/aft deck longeron
Tapping them for empennage fairing mounting screws
Emp Fairing bottom trim strips, drilled/dimpelled/primed