WICHITA, Kan. (AP) — A Topeka man faces sentencing for his role in a foiled plan to detonate a bomb at the Fort Riley military post to kill and maim as many U.S. service members as possible.

Alexander Blair has told the judge he made a big mistake and blames a genetic disorder for allowing others to take advantage of him. U.S. District Judge Daniel Crabtree will weigh such factors Wednesday as he calculates how much prison time, if any, the 29-year-old Blair should serve.

Blair pleaded guilty in May to a conspiracy count that carries up to five years’ imprisonment. He admitted loaning John T. Booker $100, knowing it would be used to pay for storage of a bomb Booker planned to detonate in April 2015 at Fort Riley.