"They can run bombing missions only in daytime with the sun shining, but they miss their targets anyway". Maj. Gen. Pavel Androsov said that Russia's long-range bombers would be upgraded in 2009 with the aim of being able to hit within 20 meters of their targets. Also in September 2009 it was reported that an East European network of the Joint CIS Air Defense System was to be set up by Russia and Belarus. This network was intended to protect the airspace of the two countries as defined in the supranational 1999 Union State treaty. Its planned composition was to include five Air Force units, 10 anti-aircraft units, five technical service and support units and one electronic warfare unit. It was to be placed under the command of a Russian or Belarusian Air Force or Air Defence Force senior commander. In July 2010, Russian jet fighters made the first nonstop flights from European Russia to the Russian Far East. By August 2010, according to the Commander-in-Chief of the VVS Alexander Zelin, the average flight hours of a pilot in Russian tactical aviation had reached 80 hours a year, while in army aviation and military transport aviation it exceeded 100 hours a year. On 15 August 2010, the Russian Air Force temporarily grounded its fleet of Su-25 ground attack aircraft to conduct an investigation into a crash that happened during a training mission. The Russian Defence Ministry said that the plane crashed on 6 August 2010, 60 km to the north-west of Step air base in Siberia, according to RIA Novosti. 2011–2020 According to the instructions of the General Staff of the Armed Forces on 1 September 2011, the unmanned aircraft of the VVS and the personnel operating them moved under the command structure of the Russian Ground Forces. As of 2012, the VVS operated a total of 61 air bases, including 26 air bases with tactical aircraft, of which 14 are equipped with fighter aircraft. In terms of flight hours, pilots in the Western Military District averaged 125 hours over the 2012 training year. Pilots from the Kursk air base achieved an average of 150 hours, with transport aviation averaging 170 hours. In February 2014, during the early periods of Russia's annexation of Crimea, the assets of the VVS in the Southern Military District were activated and flown to the peninsula for supporting the rest of the operations. On 1