friends and family taking donations for nick shrey and his life elizabeth who will have to go through several life- saving surgeries. the couple has two kids ages 4 and 5. investigators say the driver stayed at the scene but it's not clear if that person faces charges. >>> some days it's tough to wear the badge. like overnight when a tucson officer was forced to shoot and kill a man who wouldn't stand down. the officer used a stun gun at one point but said the guy kept attacking him. >> it's unpredictable out there. >>> a south san francisco after being knocked out cold with a skateboard. >> law enforcement is going through difficult times with unprovoked targeted attack on police officers. yesterday this hit home here in south san francisco. >> as he mentioned investigators say it was unprovoked. no warning here. the suspect behind bars. warnings out there and they are true. school records showing students, even the principal complaining about bus driver's behavior before the crash. the driver would slam on the brakes if the students were moving seats. six children died in the crash.