What does ARES stand for in Firefall?

What does ARES stand for in Firefall? - White Paper Rolls on White Table

In Firefall, the quest dialog always refers to you as an ARES (A.R.E.S.?) pilot/team. What does ARES stand for (or is short for)?

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What does ARES stand for in Firefall? - Clear Diamond on White Round Table

What does ARES stand for in Firefall? - Calm woman behind tree bark in park

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