Talk:Land Base Aerial Support/@comment-26334968-20161215203110

This may sound a bit silly but how can I use my Land Base for world 6-4? I've completed the quests so I have 2 set fo construction set for land bases but I do not know how to activate them! World 6-4 says I can have 1 or I have? 1 base yet I do not know how to get to that screen as the sortie screen is different than of the event screens! Care somebody to help me?