from climbing fences to cars on the runway a disturbing new investigation reveals how many times people have made it past security and into sensitive areas of u.s. airports. i'm wolf blitzer. you're in "the situation room." we're following breaking news. a new witness account to that shocking police shooting in south carolina. a woman who saw the moments leading up to it now speaking out for the first time revealing what happened exclusively to cnn. and state authorities have just announced they are releasing dash cam video that recorded key moments of the confrontation between walter scott and former police officer michael slager. we are expecting it in "the situation room" any time now. we will show it to you as soon as we get it. stand by for that. we are covering all angles of the breaking news this angle with our correspondents and our guests including the president of the national urban league marc morial.