The American Growler has no doors or windows and is made that way. Picture at the below web site.
http://www.usatoday.com/news/washington/2005-12-28-corps-jeep_x.htm
I can see that "Danielle" would prefer to sit in the dubious comfort of an armored vehicle, but not all warfare is conducted that way; sometimes being able to move and react quickly is more important than safety.