If you aren't an experienced wood worker, stick the piece somewhere safe and bring it to Catinthehat once you get to Ft Mac. If you are an experienced wood worker, remove the two machine screws that are holding the metal cap on the piece that came off, go to a hardware store and buy two new screws with the same head and thread size but 1" longer. Glue the piece back in place with titebond (water resistant wood glue) and once it has dried drill the holes deeper with the correct sized drill, run a tap in just like it was metal then screw the cap back in place with the new screws. The screws will now be biting into a much stronger piece of the stock so this won't happen again. Using machine screws in hardwood instead of wood screws is a fairly new practice, but if you look closely at the photo's you will see the existing screws are machine screws, not wood screws