♪ ♪ captioning sponsored by cbs >> o'donnell: breaking news tonight, moments of terror on a military base. >> we have multiple patients at the front gate. >> o'donnell: a pilot from saudi arabia opens fire at a naval air station in florida. four are dead, eight more hurt. what police did to stop the killer. >> they ran to the fight not from the fight. >> o'donnell: tonight, was it terrorism and how did he get a gun? shoot-out in the street. police fire 200 rounds in rush hour traffic. a botched burglary turns into a high-speed chase through the streets of miami. four are dead, including a man heading home. >> this is the old wild, wild west. this is a shoot-out that should. >> o'donnell: did police put too many lives at risk? misery spreads-- the flu season off to its earliest start in 15 years. excessive force?