The U.S. Army has enlisted developer C² to develop seven iPhone apps that teach Patriot missile crews how to launch missiles at targets, according to a report in The Escapist. The developer has completed the first app and delivered it to the army, and is already working on the second. The first app teaches "launch station march orders and emplacement," using a combination of video from real launch crews in action, illustrations, and other visual aids. The app is meant to be used in a classroom with an instructor, according to the report.
Obviously, these apps are not for public consumption. Future apps from C² for the Army will help train missile crews in specific areas (from The Escapist report):