. >> reporter: 31-year-old staff sergeant darrin hoover's father said his son was devoted to family andnd they would have followed him through the gates of hell if that's what it took. and ultimately that's pretty much what he did. >> reporter: 20-year-old lance corporal kareem nikoui's mother wrote on social media "i felt my soul leave my body as i was screaming that it can't be true. no mother, no parent should ever have to hear that their child is gone." 20-year-old lance corporal rylee mccollum will never get to experience fatherhood. his wife is expecting their first child. the servicemen and women range in age from 20 to 31. all killed doing what they loved. >> our weijia jang reporting there. in addition to those killed, 18 u.s. troops were wounded in the airport attack. they are recovering at a hospital in germany that is the "overnight news" for this tuesday. reporting from the nation's capitol, i'm errol barnett. >>> good morning. this is cbs news flash. i'm elise preston in new york. u.s. officials are working to get fewer than 200 americans out of afghanistan. the state depa