The exodus of Central American migrants is making its way slowly through Mexico, having crossed the border from Guatemala. As fatigue from the heat, distance and poor sanitary conditions has set in, the numbers of people participating in the march has slowly dwindled but a significant group are determined to get to the United Sates. The Pentagon will is deploying 5,200 active-duty troops to the US-Mexico border to confront the migrants, many of them families seeking refuge from endemic violence and poverty