3 police officers described an intense gun battle with Boston Marathon bomb suspects . They said the 2 men shot at them , threw bombs and tried to run them over . Jurors see the boat where Tsarnaev hid before his arrest .
3 police officers described an intense gun battle with Boston Marathon bomb suspects . They said the 2 men shot at them , threw bombs and tried to run them over . Jurors see the boat where Dzhokhar Tsarnaev hid before his arrest .