Based on his fighting style, and he doesn't have superpowers but is a talented and super-trained high-level agent, his prequel should be Mission: Impossible 4... According to my guess, Before Hawkeyes became Hawkeyes...
I go back as far as a bunch of Hawkeyes serving on American TV shows. At the earliest, he was an elite sniper of the US military. He was involved in the US military's operation to rescue the Resident Evil crisis in England. Due to the tragic failure of the operation, he also sacrificed (pseudo) in the operation. He was rescued by the U.S. military. Due to the various human tragedies he saw, he couldn't adapt to normal life, so he wanted to die, joined the most dangerous combat unit, the bomb disposal unit, and became a bomb disposal expert. Life, see "The Hurt Locker" for details.
After the heroic battle in Afghanistan, Hawkeye's talent was truly discovered and developed into a senior spy who fought alongside Tom to protect the national security of the United States - see Disc 4
and Tom to protect the earth from terror After the threat of nuclear weapons, he was successfully promoted, and was poached from the highest espionage organization of mankind by SHIELD (the founder of the Avengers, the organization that deals with the alien threat of superheroes). .
Ended up fighting side by side as mortals and superheroes in The Avengers.
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