Laurel Wamsley

SpaceX successfully launched its Falcon 9 rocket Thursday morning.

But the hard part came next: trying to catch the rocket's falling nose cone with a big net on a ship in the ocean.

Wait, what?

Biathlon links two things that don't often go together, at least in the United States: cross-country skiing and rifle shooting. It's the only Winter Olympic sport in which the U.S. has never medaled.

The number of new HIV cases reported in the Philippines has surged over the last few years, according the country's health agency. In 2007, fewer than 400 new cases were reported; in 2017, more than 11,000 new cases were identified.

Updated at 10:35 p.m. ET

The FBI says that someone called its tip line to report concerns about Nikolas Cruz, who has told police he killed 17 people in a Florida high school this week — but that the bureau failed to follow protocols to assess the threat.

The bureau says a person close to Cruz contacted the FBI's Public Access Line on Jan. 5 to report concerns about him. Those concerns included information about Cruz's gun ownership, a desire to kill people, erratic behavior and disturbing social media posts.

In the shooting Wednesday at Marjory Stoneman Douglas High School in Parkland, Fla., 17 people lost their lives.

Two of those who were killed were beloved coaches. Aaron Feis was an assistant football coach and security guard at the school, while Chris Hixon was the athletic director and wrestling coach.

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