You saw it in "Matrix" , people do want to play with bullets even after they have been fired from the gun. In some cases they want to stop it and in other cases they want to turn its trajectory to a clueless neighbor. You might not beleive in the reality of Sci-Fi flicks but it seems that the American army certainly does. Dubbed as "Magic bullet", the warhead is on the US army's wishlist and the it wants small businesses to come up with plausible designs.
Part of the “Nonlethal Warhead for Miniature Organic Precision Munitions”, its doesn't intend to kill the enemy but to hunt him. The army wants it to lock down on any human-sized target within 20 seconds in its combat range. Capable of flying at about 100 meters above the ground it will be capable of hovering for about half an hour there in case the enemy goes missing. Army has been increasing its focus on Lethal Miniature Aerial Munition System (LMAMS), since Afghanistan given to the large number of soldiers it lost in this war. Though the project hasn't been as successful and many small businesses involved with army are not happy about the returns. Though army's Switchblade, a kamikaze weapon is an exception in this category. AeroVironment is now getting $4.9million for the drone capable of detecting the enemy and detonating on the target site.