WASHINGTON — Dozens of convicts serving time in U.S. prisons for terrorism-related offenses are due to be released in the next several years, raising the question whether that's something Americans should fear.There's no easy answer.Since the Sept. 11 attacks, the United States has worked aggressively to foil attacks and has imprisoned hundreds of people who joined or helped militant groups. Experts say less attention has been paid to what happens once those prisoners complete their sentences.Among the incarcerated, according to the Bureau of Prisons, are 380 linked to international terrorism and 83 tied to domestic terrorism. A Congressional Research Service report said 50 "homegrown violent jihadists" were to be released between last January and the end of 2026.And more are entering prison.Former FBI Director James Comey, who was fired by President Donald Trump in May, had told Congress that the bureau had more than 900 active investigations related to Islamic State and other extremist activity in all 50 states.Most of those convicted of terrorism-related crimes are held at the high-security U.S. penitentiary in Florence, Colorado, and federal prisons in Terre Haute, Indiana, and Marion, Illinois.