I guess it's nothing.

Clone troopers stand guard in Phase I helmets while a shadowy figure lurks behind them. One trooper dismisses a possible disturbance.

Objects: Phase I clone trooper helmet

Keywords: false alarm, never mind, probably fine, must be my imagination, behind you, famous last words, suspicious, uneasy, oblivious, lurking, hiding, sneaking, standing guard, clone troopers, Grand Army of the Republic