I had a platoon mate who used the military to obtain a greencard. They then claimed all of their siblings as dependents for taxes, paid their mother off to stay quiet and shipped their earnings back to Mexico. Later I discovered he had an affair with a SFC's wife, gaining access to her husband's personal collection of weapons. He stole them, sold them to gang members he was affiliated with in L.A. and those weapons were used in a few armed heists. Last I heard he died of liver failure not long after we came back from deployment.