Spoilers ahead for the Marvel universe! Fans got a nice little surprise at the end of Avengers: Infinity War, when Samuel L. Jackson’s Nick Fury showed up. But that was far from the only surprise! As chaos raged all around, Fury took out a pager and sent a message containing just one symbol. True Marvel fans know whose superhero’s emblem it is, but what’s the significance? And by extension, what does it indicate will happen in the Infinity War sequel?