Question

12:16pm - 8:30pm
addressing the nation, president george w. bush vowed to
launch a thorough investigation
stand with allies to win the war against terrorism
go to war
track down and kill those responsible for the attacks

Explanation:

After certain significant attacks (such as 9/11), President George W. Bush addressed the nation and vowed to track down and kill those responsible for the attacks as a strong - response measure.

Answer:

track down and kill those responsible for the attacks