Maybe I am missing something, but does anyone know what the extra sets of six parts in Bag 5 are used for? I realize we need two sets for the “Reverse Engineering” mission, but what are the other ten sets for? The Challenge says that they “are related to the FLL Project,” but how? Also, the building instructions for Bag 4 notes that there are “unused LEGO elements in this bag for the Engagement Model.” Does that just mean that there are “unused LEGO elements” in the bag (that happened a lot), or that they are specifically “for” something relating to the Engagement Model (and if so, what are they used for?). Thanks in advance for your help. William Merone CCS Cyber Angels -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.