Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)

Soldiers attend the US-Lithuanian combined training in Pabrade, Lithuania, on Feb. 25, 2015. Lithuania held combined training with 250 US soldiers on Wednesday's media day. (Xinhua/Alfredas Pliadis)