Okie,
I article from ABC with some good info and few articles to let yo know some of the pitfalls. Most are due to outsourcing the program to a 3 rd party vendor to handle the child in the terminal. He are the good first and then the not so good.
Hope everything goes well.

http://abcnews.go.com/Travel/kids-pl...ry?id=25177645
http://thepointsguy.com/2014/09/unac...y-solo-safely/
http://www.tnooz.com/article/united-...mpanied-minor/
http://mamamusings.net/archives/2007...ied_minors.php
http://parenting.blogs.nytimes.com/2...lace-children/
http://www.nbcnews.com/id/31428198/n.../#.VRn7tEYqofo