Undoubtedly, it was a glimpse into the future. Age of Ultron opens with Tony Stark seeing a picture of the World being overtaken by Chitauri and a mass of fallen Avengers. Tony wasn't the only one who had visions, the premonition of what was to come was also experienced by other 4 OG avengers, these visions clearly connected with what happed in Infinity War and Endgame. For Tony it was nightmare, he was shown that what could happen if he did not volunteer. The very first glimpse we get is of Hulk, who no one thought could be defeated, despite the fact that he was completely decimated. However, he was visibly breathing, indicating that he wasn't dead. This hinted at what would happen in Infinity War, specifically, Hulk losing the fight to Thanos. Thor is lying down with his eyes closed, implying that he is unconscious rather than dead. You could also argue that Mjolnir is just out of reach for Thor, which could be a hint as to how he lost Mjolnir in Thor: Ragnarok, although that...
“So no matter what, I promise you…..If you need us, if you need me, I’ll be there.” - Captain America. The vulnerability, courage, and significance of Captain America's words, one of Marvel's most inspirational characters, always make me shudder. “My faiths in people, I guess. Individuals. And I'm happy to say that, for the most part, they haven't let me down. Which is why I can't let them down either.” Because Captain America epitomizes the qualities of a true leader, he never leaves anyone behind. Numerous soldiers were taken hostage by HYDRA in Captain America: The First Avenger , but despite knowing where the soldiers were, the US army chose not to dispatch a rescue operation. Despite being outnumbered, unarmed, and inexperienced, Captain America broke into the HYDRA base on his own and without any orders in order to rescue the many soldiers who had been taken prisoner. In the process, he found someone he thought he lost, his pal, Bucky. Under Ameri...