For space shuttle missions, in the firing room at the Launch Control Center, the NASA Test Director (NTD) performed this check via a voice communications link with other NASA personnel.
He himself was in Launch Control with a NASA cameraman and was the only civilian ever issued a pass to the Firing Room.
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The Arrow system consists of the joint production hypersonic Arrow anti-missile interceptor, the Elta EL/M-2080 "Green Pine" early-warning AESA radar, the Tadiran Telecom "Golden Citron" ("Citron Tree") Israel Aerospace Industries "Brown Hazelnut" ("Hazelnut Tree") launch control center.
The NEN was slated to support the Constellation Program, including the Ares launch vehicle, NISN (NASA Integrated Services Network), FDF (Flight Dynamics Facilities), KSC Launch Control Center, and the Constellation Mission Control Center (MCC).