Military.com has this piece of information which is a little different but nuanced than other reports.
Emery said it is rare for DLI students to go AWOL but it happens. An Iraqi soldier disappeared in 2009 but turned up in Houston where he asked for asylum rather than return to Iraq. A soldier from Djibouti also went missing in 2009. This year one soldier each from Tunisia and Guinea Bissau have gone AWOL.