AeroVironment Inc. located in Monrovia, California are building a new unmanned aerial vehicle that can be worn as a backpack by troops. The $75.9 million contract with the U.S. Army for the killer drones was announced last week. The Army Contracting Command has asked them to build what is known as Switchblade, which is launched from a small tube that can be worn on your back. The drone can also transmit live color and infrared feed to the user, who can then confirm the target and fire the weapon. Switchblade is also designed to fire quietly and precisely in order to minimize collateral damage.