Thomas Rhett and his wife Lauren marked the 16th anniversary of 9/11 on Monday by taking their two young daughters to meet some of New York's bravest. "So grateful and honored to get to know some of the FDNY today," Lauren wrote on Instagram alongside a black-and-white pic of their older daughter Willa Gray standing in front of fire truck while wearing a firefighter's helmet. "Remembering all of those who lost their lives 16 years ago today. I still remember sitting in my chair in middle school that morning watching on TV our country being attacked...God bless the first responders of New York City and our country."