Marvel fans have taken note of an interesting tidbit from “Episode 4" of WandaVision that could have major MCU implications. During Monica Rambeau's conversation with Director Tyler Hayward in the hallways of S.W.O.R.D. headquarters, Hayward references an astronaut program and reveals that they “lost half of their [training] personnel in The Blip.”
This line could imply that those who returned from The Blip might still be out there in space, with their ship being sent off course. Fans are theorizing that some crew members that are missing could end up being Reed Richards, Sue Storm, Johnny Storm, and Ben Grimm, or better known as The Fantastic Four, due to the superhero team's extraterrestrial origins in the comics.