Photo illustration: Madeline MarshallFederal prosecutors are expected to outline more of their evidence Wednesday against Airman First Class Jack Teixeira, the Massachusetts Air National Guardsman charged with taking and sharing highly classified intelligence documents that exposed significant vulnerabilities in the way the U.S. protects some of its most closely held secrets. Airman Teixeira, 21 years old, is scheduled to appear in federal court in Boston for a detention hearing, where prosecutors are set to argue that he should remain detained while his criminal case proceeds. The Justice Department charged him Friday with unauthorized retention and transmission of national defense information and unauthorized removal and retention of classified documents or material, charges that combined carry a potential 15-year prison sentence upon conviction.

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