1.5 hrs, 79 rivets
Got the 623 ribs fluted and positioned. Was about to start match drilling when the girl showed up. She was ready to rivet. She got all the equipment ready to go!

So we dove into aft fuselage riveting. Worked up to the 707 bulkhead. I've got plenty of side skin rivets to do for the next session until help is needed to finish the 779 rivets.