would be difficult. the massachusetts police officer shot and killed serving a warrant. he has been identified as 32-year-old sean gannon. he is from the yarmouth police force. his k-9 partner nero was shot and will go through surgery this morning. the 29-year-old of somerville was taken into custody within an hour of the murder. he will be arraigned on murder charges this morning. the latest on the bill cosby trial. the women were told how they were drugged and assaulted by cosby. we get more from cnn's jean casarez. >> reporter: christine, judge o'neil said to expect andrea constand, the accuser in the ski case, to take the stand today. this was a woman saying a year