There are three types of AIRMET, all identified by a phonetic letter: S (Sierra), T (Tango), and Z (Zulu).
As the game progresses, stronger enemy ships (labeled according to letters from the NATO phonetic alphabet) arrive.
The NATO phonetic alphabet is also used, and sometimes the two are even mixed.
NATO phonetic alphabet: the most widespread such set (e.g., Alfa, Bravo, Charlie, etc.)
The film is named after the NATO phonetic alphabet version of the identifier of the accident aircraft, LV-WRZ (Lima Victor – Whisky Romeo Zulu)
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