The phrase enemy sighted comes from military radio language and is widely used in real time strategy games to warn players about approaching opponents. Clips labelled AOE are commonly shared by Age of Empires players, where scouting and early warnings shape the opening of a match. Short voice alerts like this spread on soundboards because they are easy to recognise, loop cleanly in edits, and sum up a whole tactical moment in a single line that viewers understand without any context.