Teixeira is accused of committing one of the most serious US security breaches since more than 700,000 documents, videos and diplomatic cables appeared on the WikiLeaks website in 2010.
See recent cases of people who were convicted of willfully retaining classified information, one of the charges now facing former President Donald Trump.
US Military Leak Suspect Got Offer to Bolster Intelligence Skills usnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from usnews.com Daily Mail and Mail on Sunday newspapers.