Photos courtesy of Ted Brindle...
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Planes from the Zelazny aerobatics team performed at the Radom Air Show when two of them (R) crashed at an airport in Radom, about 100 km (62 miles) from Warsaw, September 1, 2007.
Two pilots were killed when their aircraft collided in front of thousands of spectators. A Reuters photographer at the scene said the collision occurred after a three-plane formation fanned out and two of the aircraft slammed into each other as they attempted to re-converge.
Truly a sad day in aviation history...
Video -
http://www.liveleak.com/view?i=bc4_1188672305Photo sequence -