SPIRIT OF VENGEANCE! After a devastating defeat, Bucky decides to hit Doom where it hurts - and he's bringing in some old friends to do it. It's a modern-day HELLHUNTERS reunion as Bucky brings in Ghost Rider '44 for a daring train robbery! With Sharon Carter and U.S.Agent backing them up, it seems like nothing can go wrong. But it's not easy to get the jump on Doom…