Triggering an event at the end of a MovieClip's timeline?

I’ve a MovieClip named “Player” that contains three MovieClips (one on each frame): “Idle”, “Walk”, and “Attack”. Idle and Walk are working as intended—when Player is on the appropriate frame, the animation cycles constantly; however, I am having trouble with my Attack animation.

I want the Attack animation to only play through completely one time then throw an event so I can resume either the Idle or Walk animation. Is there an event that fires at the end of a MovieClip’s timeline, or is there a better way to do this? :megaman_classic: