
Firefighters armed with jet-spray fire extinguishers stand in line in front of the construction site of the National Olympic Stadium, also known as the Bird's Nest, during a drill in Beijing November 9, 2007. The main stadium for next year's Beijing Olympic Games, the $400 million bird's nest, will open to the public for the first time in April to host a test event. [Agencies]

A general view shows the construction site of the National Olympic Stadium, also known as the "Bird's Nest", in Beijing November 9, 2007. The main stadium for next year's Beijing Olympic Games, the $400 million "bird's nest", will open to the public for the first time in April to host a test event. [Agencies]

A labourer checks the newly installed chairs at the tribune inside the construction site of the National Olympic Stadium, also known as the "Bird's Nest", in Beijing November 9, 2007. The main stadium for next year's Beijing Olympic Games, the $400 million "bird's nest", will open to the public for the first time in April to host a test event. [Agencies]

A general view of the construction site inside the National Olympic Stadium, also known as the "Bird's Nest", in Beijing November 9, 2007. The main stadium for next year's Beijing Olympic Games, the $400 million "bird's nest", will open to the public for the first time in April to host a test event. [Agencies]

A worker walks on steel frames inside the construction site of the National Olympic Stadium, also known as the "Bird's Nest", in Beijing November 9, 2007. The main stadium for next year's Beijing Olympic Games, the $400 million "bird's nest", will open to the public for the first time in April to host a test event. [Agencies]