JIATF-401 has been testing its counter-drone systems at the border. US Marine Corps photo by Sgt. Mary Torres A US counter-drone task force tested a new autonomous counter-drone system at the border. The SkyValor system is capable of sensing and disabling drones at long ranges. The southern US border is becoming a proving ground for counter-drone systems. A US task force focused on defeating drone threats recently put a new autonomous counter-drone system to the test at the US southern border.