A large part of Russia’s air force fleet has been grounded for two months after a MiG fighter lost its tail on a training flight One third of that country’s fighter jets are now said to be unsafe. A MiG-29 crashed in southern Siberia on Dec. 5 during a training flight, killing its pilot. Another MiG fighter crashed in the same area in October. Experts say the grounding of the MiG fleet will deal a major blow to Russia’s efforts to revive it’s military and project power worldwide. It will also damage Russian efforts to increase arms sales.