Two planes from the Zelazny aerobatics team crash at the Radom Air Show at an airport in Radom, about 100 km (62 miles) from Warsaw, September 1, 2007. Two pilots were killed performing aerial acrobatics at the air show in Poland on Saturday when their aircraft collided head-on 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. [Reuters]