Jack Teixeira, a 21-year-old National Guardsman accused of leaking classified military documents that were made public through the social media platform Discord, pleaded not guilty Wednesday to multiple federal charges. #pentagon #jackteixeira #news "CBS Evening News with Norah O'Donnell" delivers the latest news and original reporting, and goes beyond the headlines with context and depth. Catch the "CBS Evening News" weeknights at 6:30 p.m. ET on the CBS Television Network and at 10 p.m. ET on the CBS News app. Subscribe to the "CBS Evening News" YouTube channel: bit.ly/1S7Dhik Watch full episodes of "CBS Evening News": cbsn.ws/23XekKA Follow "CBS Evening News" on Instagram: bit.ly/1T8icTO Like "CBS Evening News" on Facebook: on.fb.me/1KxYobb Follow "CBS Evening News" on Twitter: bit.ly/1O3dTTe Download the CBS News app: cbsn.ws/1Xb1WC8 Try Paramount+ free: bit.ly/2OiW1kZ For video licensing inquiries, contact: licensing@veri...