>> it's still very painful. i mean and every time i see the video, all i can think about is that my brother was running for his life. and that was the last run that he would ever take. >> the prosecutor's office says that it can get a conviction if officer slager's premeditation existed for a few seconds before the shooting. the attorney said he'll not comment on any aspect of this case. coming up next a police officer on leave after pulling a gun on teens at a pool party. i'm going to speak with the dad who said his daughter was physically assaulted by the officer in question and we're asking would police body cameras have made a difference in mckinney, texas? also ahead, the tuberculosis scare in the country. hundreds of people in three different states potentially exposed to this severe strain of tb. we look at why this particular strain is so extreme.