A soldier with the Japan Maritime Self-Defense Force sets up a perimeter defense during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





A U.S. Marine checks GPS coordinates for his mortar team during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





U.S. Marines run down the beach to set up a mortar defense during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





U.S. Marines exit an amphibious assault vehicle during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





An amphibious assault vehicle drives through the waves during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





U.S. Marine Lieutenant Ben Nelson gives orders during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





Amphibious assault vehicles drive up the beach during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





U.S. Marines hike up a beach head during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





U.S. Marines set up a mortar defense during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





Soldiers with the Japan Maritime Self-Defense Force and U.S. Marines land on the beach during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





A soldier with the Japan Maritime Self-Defense Force (JMSDF) runs up the beach to set up a perimeter defense during a simulated beach assault at Marine Corps Base Hawaii with the 3rd Marine Expeditionary Unit during the multi-national military exercise RIMPAC in Kaneohe, Hawaii, July 30, 2016. (Photo by Hugh Gentry/Reuters)





A missile corvette fires during the Navy Day celebrations in Sevastopol, Crimea, July 31, 2016. (Photo by Pavel Rebrov/Reuters)





Russian marines parade during the Navy Day celebrations in Sevastopol, Crimea, July 31, 2016. (Photo by Pavel Rebrov/Reuters)





Amphibious vehicles drive in formation as the large landing ship Caesar Kunikov fires missiles during the Navy Day celebrations in Sevastopol, Crimea, July 31, 2016. (Photo by Pavel Rebrov/Reuters)





Russian marines perform during the Navy Day celebrations in Sevastopol, Crimea, July 31, 2016. (Photo by Pavel Rebrov/Reuters)





Seagulls fly as warships fire anti-missile ordnance during the Navy Day celebration in the far eastern port of Vladivostok, Russia, July 31, 2016. (Photo by Yuri Maltsev/Reuters)





A tank's barrel is seen on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)





A tank fires at a target on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)





Tanks drive on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)





A tank fires at a target on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)





A tank fires at a target on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)





A tank's barrel is seen on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)