Have you ever sat down on an airplane at a window seat and saw a black or red triangle sticker above your window? Here's what those stickers are really for.

These stickers serve as crucial markers for flight crew members. According to Travel + Leisure, when pilots or flight ...

They are easily identifiable by their helmets -- not just Michigan's wings or Ohio State's scarlet stripe, but the stickers plastered all over them. The Wolverines and Buckeyes are two of 13 FBS ...