1. A system, comprising: an interactive head-mounted eyepiece worn by a user, wherein the eyepiece includes an optical assembly through which the user views a surrounding environment and displayed content, an integrated processor for handling content for display to the user, and an integrated image source for introducing the content to the optical assembly; a communications facility that connects an external device to the eyepiece; and at least one sensor that detects at least one of an event and a physical quantity as input, wherein when at least one of an event is detected at the eyepiece and the sensor receives the input, a command and control interface for command and control of the external device is presented in the eyepiece.