What threat would be sufficient for the country as a whole to finally come together and present a united front? Will it take another 9/11? We all remember the day the president stood on the pile of rumble once known as the World Trade Center and addressed the nation. We were ready to do whatever it took to punish the attackers and send a signal to the world that we would not sit back and allow anyone or any government to threaten our safety. So much has changed in five years. Of course, those five years have been chock full...