It appears that Aevex Aerospace has considerable technical expertise. It works with the San Diego division of General Attomics, the maker of some famous unmanned - and much larger - aerial vehicles as the Predator and Reaper drones. Aevex has about 600 workers, some of whom deploy overseas to help the company's military and commercial customers.       The Aero Vironment company, based in Arlington, Virginia, makes the SWITCHBLADE in two versions. The larger 600 version of Switchblade is being used to destroy Russian tanks and armoured vehicles.The 5.5 pound 300 version of Switchblade can be carried in a soldier's backpack and quickly launched - making it highly useful for Ukrainian soldier's who are trying to manuver around Russian troops and vehicles. It is basically a one-way drone and attack drone.