In July 2019, Main Fishback knowledgeable Mr. Garlasco in an e mail that the C.I.A. was after him, he recalled. “I used to be like, dude, name me.” Main Fishback was in Europe with a brand new place. “He mentioned, ‘I’m going to present categorized data to overseas governments when you don’t get the C.I.A. off my again.’ It was there that I misplaced the thread.”

The job in Europe unraveled later that yr.

Main Fishback returned to Michigan, however a collection of fights there led to a court-mandated remedy keep, which he violated. He was arrested after an argument at a soccer recreation with an R.O.T.C. officer in September. Then got here a collection of stays at low-cost group properties whereas associates tried to get him right into a Veterans Affairs hospital in Battle Creek.

“It was horrible to hearken to him there,” Ms. Ford mentioned. “He was crying. He mentioned, ‘Are you able to assist me? I can’t belief my household.’ ”

His associates began a GoFundMe marketing campaign to pay for a high-end remedy middle in Massachusetts. He started talking slowly in telephone conversations, mentioned Ms. Ford, who attributed it to excessive ranges of psychotropic medicine.

In an e mail, a affected person coordinator for Veterans Affairs who noticed him on Thursdays described his look as “alarming,” noting that the previously match Military main might barely stroll and that his “arms have been locked in a 90-degree place and he by no means modified his facial features all through our discuss.”

“He had breakfast Friday morning,” Ms. Ford mentioned, “and later they discovered him useless.”

The Battle Creek facility referred to as his sister that day. Ms. Jorgensen mentioned she responded: “It’s too late. He’s gone.”

“We’re saddened over the lack of Military Veteran Ian Fishback and lengthen our honest condolences to his household,” mentioned Terrence Hayes, a spokesman for the division. “V.A. has been involved with the Fishback household to supply help and any acceptable companies to help them throughout this time. V.A. stays devoted to creating certain that each one Veterans get the care they want in a well timed trend.”