Talk:Fall 2016 Event/@comment-26316660-20161124154049

>If any Enemy Aircraft survives, attacks your Land-bases, but its attack completely misses, but results in the white confirmation text appearing, this will not count as a Perfect Land-base Defense, and you must attempt again until all Aircrafts are shot down

I suspect that you will need more than two air raids if their attack completely misses (when you fail to shotdown all planes). After maybe my forth / sixth tries without Perfect Land-base since there still enemy plane left, I've finally unlock secret node.