Colin Dwyer

It took just over an hour.

At about 10:08 p.m. local time Sunday, the first reports of gunfire surfaced on dispatch radio for the Las Vegas Metropolitan Police Department. By about 11:20 p.m., law enforcement had used explosives to bust down the door of a hotel room in Mandalay Bay, where they would soon report their suspect dead, surrounded by firearms.

At first, it just sounded like fireworks.

The Sunday headliner, Jason Aldean, had taken the stage not 30 minutes before, and it seemed natural that on the final night of Las Vegas' three-day Route 91 Harvest music festival there would be some pyrotechnics. Even Aldean stayed on stage as the first loud bursts rang out above the crowd of some 22,000 people.

The rhetoric between the U.S. and North Korea cooled for a day — and just a day only, it appears.

Roughly 24 hours after Secretary of State Rex Tillerson told reporters the U.S. has been engaged in diplomatic talks with Pyongyang, President Trump took to Twitter on Sunday to deride the effort — as well as Kim Jong Un.

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Nearly 11 months since the last time Abu Bakr al-Baghdadi spoke publicly, the leader of the Islamic State purportedly broke his silence Thursday. ISIS media released a 46-minute audio message that plays a speech by Baghdadi, according to the militant group.

It remains unclear when the message was recorded.

Sure, it's been known to rain cats and dogs during some heavy thunderstorms. And if we're to believe The Weather Girls — and who wouldn't? — it was even raining men that one time in 1982.

But fish? That feels like a new one.

After months of competition and preparation, contractors broke ground Tuesday on eight prototypes for President Trump's long-promised border wall. U.S. Customs and Border Protection announced that the companies would have about 30 days to complete construction on their prototypes in San Diego.

"We are committed to securing our border and that includes constructing border walls," CBP's acting deputy commissioner, Ronald Vitiello, said in a statement Tuesday.

Roughly a month after the Brazilian government said it would open a wide swath of Amazon rain forest to mining interests, it has backpedaled on that controversial decision. In a statement Monday, the country's Ministry of Mines and Energy said President Michel Temer would issue a new decree restoring the original conditions of the nature reserve.

Updated at 6:30 p.m. ET

Equifax Chairman and CEO Richard F. Smith is retiring, the credit reporting agency announced Tuesday. The news comes just weeks after the company said a massive data breach exposed the personal information of up to 143 million people.

The massive earthquake rattled through Mexico City at about 1 p.m. local time Tuesday, razing buildings and filling the air with thick clouds of dust. As residents left their offices and homes, dozens of which sustained severe damage or collapsed entirely, the sun was glaring high in the sky.

It was midday, and the children were still in school.

Updated at 7:45 p.m. ET

As the morning sun rose over the cities of Central Mexico on Wednesday, where city blocks had lain neatly arranged, there was now a mess of rubble and stunned residents, watching as thousands of earthquake volunteers and rescue workers dug through scattered stones searching for signs of life.

The 7.1 magnitude quake struck Tuesday in Puebla state, some 75 miles from Mexico City, but it devastated a vast expanse of the country. Mexican authorities put the death toll at 230.

Updated 6:30 a.m. ET Wednesday

The head of Mexico's civil defense agency has lowered the number of people confirmed dead in Tuesday's earthquake. Luis Felipe Puente now says 217 people were killed. Earlier he said the death toll was 248. He gave no explanation for the revised number.

Updated at 3:30 a.m. ET

The death toll continues to rise in Mexico after Tuesday's earthquake. The country's national civil defense agency confirmed the death toll stands at 248. Rescue teams are digging through the rubble to find survivors.

Authorities say three people have been arrested after an eruption of violence on Georgia Tech's campus Monday night. The clash, which broke out during a vigil for a 21-year-old student shot and killed Saturday by police, left officers with minor injuries and one police vehicle damaged by fire.

For just under half an hour Saturday night, President Trump and his South Korean counterpart, Moon Jae-in, tackled the missile threat looming from Pyongyang. The pair of leaders condemned North Korea's recent ballistic missile test — and once more vowed to strengthen their joint defenses and ratchet up economic pressure on Kim Jong Un still further.

The Department of Transportation released its revised guidelines on automated driving systems Tuesday, outlining its recommended — but not mandatory — best practices for companies developing self-driving cars.

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