support required_var 1

signal, army radio distress, command, communication, cop, english, handheld phone, interference, male, military, monitoring, patrol, phrases, police, radio, reporting, satelite, satellite, squad, surveillance, swat, tactical, talk, talkie, team, transmission, vo, vocalizations, vocals, voice, voices, walkie, war, talking, wireless, audio, sfx, sound, sounds, effect, effects, fx