Good morning, Canada!

Here’s your daily roundup of 5 things you need to know this morning:

It's Friday and CTV News has 5 things you need to know before kicking off your weekend: former prime minister Stephen Harper gave his first major speech since the election; U.S. President Barack Obama made a historic visit to Hiroshima; Canadian doctors are concerned about rising colorectal cancer diagnoses; Canada's ambassador to Ireland is in the news after tackling a protester at a ceremony; and the Royal Canadian Navy gave a glimpse of what it's like on one of Canada's submarines.

And for "Flashback Friday," we look back 10 years ago when a deadly earthquake rocked Indonesia.

1. Conservative convention: Former prime minister Stephen Harper gave his first major speech since the election, urging his party to stay united, and thanked "the love of my life, Laureen," for supporting him through his time in office.

2. Hiroshima: U.S. President Barack Obama became the first U.S. president to visit the bomb site of Hiroshima, and called for the end of nuclear weapons.

3. Colorectal cancer: Canadian doctors say they have noticed a "rapid increase" in the number of patients under the age of 50 with colorectal cancers. But they can't explain why.

4. Making headlines: Kevin Vickers, Canada's ambassador to Ireland, appeared back in the media spotlight yesterday after tackling a protester at a ceremony to honour British soldiers in Dublin. Vickers first made headlines when he was the sergeant-at-arms on Parliament Hill who helped stop a gunman.

5. Submarine sleepover: The Royal Canadian Navy invited media to spend the night aboard one of its submarines, in a rare glimpse of Canada’s secretive underwater vessels. An ongoing audit of the military could lead to cuts in the submarine program.

And one more thing for "Flashback Friday": It's been 10 years since a devastating earthquake struck Indonesia, leaving 5,700 people dead, thousands more injured and hundreds of thousands homeless. It remains the country's worst natural disaster since the Dec. 26, 2004, Indian Ocean earthquake and tsunami.

Indonesia earthquake May 27, 2006