Question:  What man-portable, counter-radio-controlled improvised explosive device (IED) jammer was built by a corporation headquartered in Sparks, Nevada?
Sentence (from "Ammunition technician"): An ammunition technician (AT) is a British Army soldier, formerly of the Royal Army Ordnance Corps but since 1993 of the Royal Logistic Corps, trained to inspect, repair, test, store, and modify all ammunition, guided missiles, and explosives used by the British Army.
Relevant evidence: No