[Russian Defense Ministry: two pilots killed after a Mi-28 helicopter crashed in Crimea] May 12, the Russian Defense Ministry announced that on May 12, a Mi-28 helicopter crashed in Crimea, killing two pilots. The notice said: "15:42 on May 12, a Mi-28 helicopter crashed in the Occupy region of the Republic of Crimea during a routine training flight. The helicopter is not carrying ammunition. There is no ground property loss. Both pilots were killed. " The Russian Defense Ministry said that the cause of the crash was initially determined to be a mechanical failure. The committee of the Russian Air Space Army General Command has rushed to the scene of the accident to conduct an investigation. (Russian Satellite News Agency)