following every second of the proceedings. his brother sounding confident they ll get justice. my family, we have the faith. after we get the verdict and we get this conviction, we ll be able to breathe. so, let s bring in alex perez with us again tonight from minneapolis and alex, you reported there now, nine minneapolis police witnesses testifying against derek chauvin, rare, given so often that blue wall of silence, sticking together within the force. and prosecutors also bringing in expert witnesses from other police departments, as well? reporter: yeah, david, the prosecution bringing in outside experts, a sergeant with the los angeles police department testifying today he said chauvin s actions were excessive. the prosecution really trying to hammer home that what chauvin did is not what officers are trained to do. david? all right, alex perez, we ll see you right here tomorrow night. and we turn now to new and difficult images from the southern border. a young boy, alo