8 Methods of Modern Fiction Empowerment that isn't just "Cybernetics" or "Magic"

Maybe private security for the world's elites, your order of John Wick assassins, tacticool operators who you want to be slightly more plausible then action-movie heroes in how they survive and thrive in multiple firefights? You want your only-slightly paranormal investigators to be able to survive battles with the crocodile-sewer-people? How do you do that in a way that fits a modern setting and…