Once again, tens of thousands of people are crossing the Mediterranean Sea to come to Europe. To rescue them from drowning, the Italian navy has authorized a military and humanitarian mission, Mare Nostrum. The Italian navy has five ships on permanent deployment patrolling the waters. Their mission is to rescue refugees and people in distress and bring them to safety. The refugees who get stranded in Italy are mainly from Syria and east Afridca, but they know they could be deported to their home countries at any time, so they often try to conceal their identities, hoping to stay in Europe. A report from the San Giorgio amphibious transport dock.