Board Thread:Unanswered Questions/@comment-5899671-20150301153730/@comment-1824272-20150301221335

It's confirmed from this trailer: https://www.youtube.com/watch?v=3MNYruNnBzc

Slow the video down to 0.25 speed and look for the frame around 0:35 where the camera turns back after shooting down the aircraft. It's there for one single frame. Even Kono apparently wasn't aware they were there.

I suppose you weren't the first to find these Easter Eggs then, Nico24. :P