full story. you can also nominate someone who you think could be a cnn hero on our website. fill out the form. we'll be right back. actually, we have some breaking news right now in to cnn. isis launching a complex attack on a base in southern syria. americans were on this base along the syrian/jordanian border when isis attacked using vehicles loaded with explosives and fighters wearing suicide vests. ground forces were able to repel isis fighters until coalition forces could launch air strikes against them. so there are no reports of any coalition deaths. and, happening right now in dallas, major crowds marching for immigration reform. a live look right now at city hall in downtown dallas where people are congregating. the crowd is rallying against what they call discrimination of minorities and aggressive deportations. we'll continue to keep a close watch on this march.