elizabeth: she has more on the mollie: this was our first glimpse of the 7 mccaughey's, kenny jr., alexis, natalie, kelsey, nathan, brandon and joel. 18 years ago ranging from two pounds five ounces to three pounds four ounces. from there our cameras caught up with the seven siblings and older daughter mikayla as they grew from babies to toddlers. to teenagers learning to drive . >> who wants to date? mollie: and yes dating, now in their senior year, it's a mixture of emotions as they look to graduation and life on their own. brandon will be the first to leave the nest. he has enlisted into the army. >> i'll be going june 1 for 14 weeks of basic and air. -- basic and ait. and then my job is the infantry, so i'll probably be gone most of the time because i'm going active duty for that. mollie: and that is hitting his siblings hard, especially kenny jr. >> i'm definitely going to miss everybody, being so close to everyone. it's going to be hard just to see us all go especially my brother brandon going into the military. him and i were the closest. i'm going to miss him a lot. mollie: kenny

this was our first glimpse of of the seven mccaugheys, kenny jr., alexis, natalie, kelsey, nathan, brandon, and joel.. ounces, to 3 pounds, 4 ounces. from there our cameras caught up with the 7 siblings and older daughter mikayla as they grew from babies. to toddlers -- to teenagers learning to drive -- and, yes, dating. now in their senior year, it's a mixture of emotions, as they look to graduation and life on their own. brandon will be the first to leave the nest. he has enlisted into the army. >> i'll be going june 1 for 14 weeks of basic and air and then my job is the infantry. i'll probably be gone most of the time because i'm going active duty for that. mollie: and that is hitting his jr. miss everybody. going into the military. we were the closest. i'm going to miss him a lot. mollie: jkenny junior plans to go into the construction trade. kelsey is in all state choir and wants to pursue a career in music. >> after graduation, i don't know where i'm going. all i know is that i want to go into music, musical theater. anything around there. mollie: and she has a built in fan club. >>

. >> reporter: kenny jr. plans to go into the construction trade. kelsey is in allstate choir and wants to pursue a career in music. >> they're my biggest supporters. and i have so many of them, so i what i did. >> reporter: natalie, joel and state. nathan and alexis have had numerous surgery forrer is brawl palsy going from crawling to crutches and now walkers and braces. >> me and lexxi are completely done with going to getting different surgeriries and checkups unless we need something, we're completely done >> reporter: and it hasn't slowed either one of them down. >> this is my first year getting into high school cheerleading squad. so that was a really big moment for me. >> reporter: days of reflection already are under way. >> my first thought is did i do a good enough job with them? >> every single thing this year will be the last. >> reporter: so what advice do they have to parents just starting out? >> just have them one at a time. >> reporter: mollie cooney for cbs news, des moines, iowa. >> that sounds like great advice. coming up after

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