Some envision the next generation of sniper to not be much of a rifle sniper at all but rather a target painter with a laser that paints a enemy target for air strikes, possibly unmanned predators. With a miniature cube that can be placed and camouflaged if needed, the cube could be placed at several targets anywhere in the world for later strikes. in fact an unmanned system could land the Cube in the area or even have it delivered via space and dropped in the atmosphere.
So what is the the Cube it would be a device in cube like shape that once landed would have the ability to be mobile no matter what side it landed on. A laser target painter could be sized and thus the size of the cube would differ depending on the range needed to acquire a target.