A participant is seen during the Red Bull Flugtag Russia 2011 on the outskirts of Moscow, August 7, 2011. Enthusiasts competed to fly the longest distance in self-made aircrafts in an attempt to win the Flugtag contest. [Photo / Agencies]

A participant is seen during the Red Bull Flugtag Russia 2011 on the outskirts of Moscow, August 7, 2011. Enthusiasts competed to fly the longest distance in self-made aircrafts in an attempt to win the Flugtag contest. [Photo / Agencies]