A German police officer from the federal state of North Rhine-Westphalia fires his 9mm Walther P99 DAO...
The muzzle flash is seen as a German police officer from the federal state of North Rhine-Westphalia fires his 9mm Walther P99 DAO (DAO - Double Action Only) semi-automatic pistol during training at the new regional police training centre in Dortmund, western Germany May 4, 2016. REUTERS/Wolfgang Rattay