Military vehicles are seen on the pontoon bridge for water obstacle crossing operation during the media day training of the "Iron Wolf 2017" military exercise in Jonava District, Lithuania, on June 20, 2017. Iron wolf 2017, Lithuania's largest multinational military training, is officially held from June 12 to June 23, gathering around 5,300 military personnel from ten NATO member countries.(Xinhua/Alfredas Pliadis)
