 In the past few years , lots of training exercises took place in Romania with other Balkan or Allied countries . Most of these exercises took place at <unk> , which is one of the largest and most modern training firing ranges and military facilities in Europe , with a total surface area of 270 square kilometres . It was announced on December 6 , 2006 that 1 @,@ 500 U.S. troops stationed at <unk> <unk> , which in time will form Joint Task Force East , will be using <unk> as a training base . 
