A system and method for representing immutable versions of a document that can be simultaneously accessed by a plurality of processes. In an interface, an artist views a simplified 3-D scene model and a rendered 2-D image. The retention system is modular and mechanically strong. Embedded sensors provide continuous, onboard information about the angular orientation of the munition, such as its pitch, yaw, and roll angles, as well as its absolute position relative to a ground station. The container also includes a self-check frequency generator that emits a frequency signal capable of being detected by the frequency detector.