So! September 16th is POW/MIA Recognition Day!
Seems like a holiday like this would have a lot of potential for some interesting stories. Whether your character has been caught behind enemy lines, or lost someone in the heat of battle or is struggling with letting someone in their life go without the closure that most people get, there's a story there.
(And
here is a little bit more about the holiday.)
Just make sure your header isn't MIA...