Congratulations on a great trade. Can't argue with success, much better to try to learn from it. MA has said many times that the DJI is not yet ready to breakout above resistance(approx. 18500) and has strong support at about 15500. Looks like you played that perfectly.
Thanks, but I am sure you are aware of that traders talks only about their great trades and amazing moves, but we tend to not over-publicise our mistakes.