Sukhoi SU-26 and Smoke Ring

I was fortunate to capture a photo of the coolest aerobatic stunt I've ever seen.

The pilot's ground crew shoots off a bomb on the ground under the plane as the pilot does a low pass in front of the grandstand. The bomb produces a huge smoke ring.

The pilot performs an Immelmann turn to double back on the smoke ring. Then he flies under the smoke ring and then flies up through it. What a hoot!

(http://en.wikipedia.org/wiki/Immelmann_turn)