Maj. Fred Galvin, who led the first Marine Corps Special Operations Command unit to ever deploy to Afghanistan and was later the subject of an investigation into a controversial firefight that got his unit booted from the country, will write the foreword for “Level Zero Heroes,” the book’s author recently told Marine Corps Times. Penned by former Staff Sgt. Michael Golembesky and set for release this fall, Level Zero Heroes will follow the story of Golembesky’s unit, Marine Special Operations Team 8222, which fought an entrenched insurgency for seven months in 2009 and 2010 out of Forward Operating Base Todd…