A National Guard officer has pleaded guilty to leading a double life, marrying a woman he met in Mongolia while still married in the U.S. Prosecutors allege Maj. Collin Welch used a government travel card and forged documents to facilitate his actionsA National Guard officer carried out a secret second marriage to a woman he met while posted in Mongolia, using a government travel card and forged documents to facilitate the double life, U.S. prosecutors allege. The affair began in 2019, when Welch was with the Alaska National Guard and stationed at the U.S. Embassy in Ulaanbaatar, Mongolia. In 2023, Welch moved to Washington with his family for a role with the District of Columbia National Guard that required extensive foreign travel. During that time, Welch knew the woman and her daughter had expired tourist visas but faked a variety of records to convince them otherwise.