
Hannibal Hanschke / AFP - Getty Images
A policeman stands next to the accident site where two helicopters crashed near the Olympic stadium in Berlin on March 21.

Hannibal Hanschke / AFP - Getty Images
Police officers work at the scene where two police helicopters crashed near the Olympic stadium in Berlin.

Johannes Eisele / AFP - Getty Images
The wreckage of a police helicopter is seen near the Olympic stadium in Berlin.
At least one police officer died after two helicopters collided at Berlin's iconic Olympic Stadium during a security exercise, authorities said. -- Agence France-Presse