It didn't take long after the first shots rang out for news to spread. A gunman just stormed the capital with deadly intentions. Or was it multiple gunmen? How? Where were they? Twitter instantly flooded with reports from the scene, the horrifying truth buried underneath a deluge of conflicting updates. Is there one shooter or more? Are we under attack? Where's the Prime Minister? In the early moments of an emergency, every story seems true. By nightfall, things would be clearer. A single gunman, homeless and mentally ill, had shot and killed Cpl. Nathan Cirillio, a soldier standing guard at the Tomb of the Unknown Soldier, before running into Parliament. Not long after, he was cut down in a hail of gunfire in the Hall of Honour. A lot of emotion flew that day - fear, anger, and eventually, relief. On today's episode, as heartache gives way to patriotism in Ottawa and across Canada, we take a look at how stories of fear and triumph move during disasters, as well as their effect on society.