BOSTON — A federal judge on Tuesday sentenced a Massachusetts Air National Guard member to 15 years in prison after he pleaded guilty to leaking highly classified military documents about the war in Ukraine.

Jack Teixeira pleaded guilty earlier this year to six counts of willful retention and transmission of national defense information under the Espionage Act following his arrest in the most consequential national security case in years. Brought into court wearing an orange jumpsuit, he showed no visible reaction as he was sentenced by U.S. District Judge Indira Talwani.

Before being sentenced, he apologized for his actions.

“I wanted to say I’m sorry for all the harm that I brought and caused,” Teixeira said, referencing the “maelstrom” he caused. “I understand all the responsibility and consequences fall upon my shoulders alone and accept whatever that will bring,” he said, standing as he addressed the judge.

Afterward, Teixeira hugged one of his attorneys and looked towards his family and smiled before being led out of court.

— The Associated Press