Airman 1st Class Liam Cain, right, and other U.S. Air Force Honor Guard ceremonial guardsmen, march in the South Boston St. Patrick’s Day Parade in Boston, March 18, 2018. Cain, a Boston native, got the opportunity to perform in person for his family and friends for the first time during the event. (U.S. Air Force photo by Airman 1st Class Valentina Viglianco)