Army investigators consider Trevor Nichols to be AWOL, but his mother suspects the young soldier and father of a 2-year-old son was perhaps murdered. Nichols disappeared in November 2017 when he was supposed to board a train for a 2-week leave. Erin Nichols shares her concerns about her son's disappearance with Nancy Grace. Cold Case Research Institute director Sheryl McCollum, lawyer and& psychologist Dr. Brian Russell, and CrimeOnline.com reporter Leigh Egan join the discussion. Nancy shares thoughts on this 4th of July with singer-songwriter Barry Michael, whose new song "I Stand" is a ballad about why he stands for the national anthem.