In most cases a tool or function is unexpectedly no longer available to the user when an application switches modes. The AP has a story on the accidental F-16 strafing of a NJ children's school due to pilot error and confusing software. The pilot had over 2,000 hours of logged flight time, nearly half of that in the same type of Jet. There are other scattered reports of defense-related mishaps due to poor design.
Aside from PLGR and the Blue Force System are there examples of stand-out successes in defense, security or law enforcement?