Russian air defence exercises involving 12,000 soldiers and 250 aircraft continue today in preparation for a larger drill in September called Tsentr-2015. Fighter jets and military helicopters from various military districts yesterday arrived at the military air-field at Marinovka in Russia's Volgograd region to take part in the excercize. Check out our website: http://uatoday.tv Facebook: / uatodaytv Twitter: / uatodaytv