You're a killer, Henry. A Cyborg. Your body is infused with the most high-tech, sophisticated, mind-controlled weaponry I've ever seen. You're more than a man with machine parts--You're the next step. A one-man army! Stronger, faster--
Under the mind-control of JJ, an operator of Biotek,  he became a Deathlok, acting as an assassin, soldier, killer, fighter and operative. He participated in at least one armed conflict alongside organized troops and assassinated countless people even in populated areas. He was once close to being captured by S.H.I.E.L.D. during a mission that went bad in Russia. However, he was often memory-wiped so as not to remember his assignments.
While at MTA Metro-North station, he tried to engage in discussion with another leg amputee and advised him to contact Biotek, as his own plastic prosthesis forced the man to use crutches. The man then left, seemingly not pleased with the discussion.
Immediately afterward Henry met Seth Horne, an off-duty S.H.I.E.L.D. agent who was present when the eye of the Watcher exploded. This released a blast of energy which revealed deep secrets to anyone in its radius and Hayes' true story was revealed to Horne. Horne, a level four agent, wanted to congratulate him, stating that S.H.I.E.L.D. would wish to have him in their ranks.
As Hayes didn't really know what Horne was talking about, he threatened to call the authorities, forcing the agent to leave after a last congratulation. Immediately, Hayes was ordered to kill him as the announcement board of the station displayed the words "Whiskey David" which triggered Hayes' Deathlok persona.
After following Horne into the restroom, Deathlok quickly executed him, left, took some meds, and returned to his civilian life, heading to the train to join his daughter Aria.