My John Walker Origin Story (The Birth Of U.S Agent)

So since the introduction of John Walker A.K.A U.S Agent in The Falcon And The Winter Soldier I have become a fan of his character as I think he's a interesting character to explore and has real depth to him and I had this crazy idea floating around my head about my own take on his Character and his origin story taken elements from the comic books, his live action adaptation and also adding my own personal take on the character to create this story. before you ready you should 1. Not read if you are someone who hates John Walker (well you can if want I can't stop you I'm just saying if you don't like him then this isn't for you) 2. Take into account this isn't necessarily set in the MCU timeline sure I do take into account events and characters from the MCU however this isn't based in that world (let's just say this is What If story) 3. I've changed certain characters and events around so some people who maybe dead are alive or have different personalities/Lives to what you see in the Movie's and also some character's wouldn't make since given the timeline of events but hey just accept it and finally 4. be aware of possible triggers since this story is kinda dark and graphic at times so please if you maybe upset or offended by certain topics then it's ok to avoid this story. Ok with all that out the way let's Jump into the world of John F Walker.