Pair skaters Ryom Tae Ok, 18, and Kim Ju Sik, 25, qualified last year for the Winter Games. They'll learn this weekend whether they'll compete in Pyeongchang.
The two countries will also form a unified women's hockey team to compete in the Winter Olympics in February. The North will send a cheering squad to support its delegation.
"North Korea appears to have launched a missile ... The government urges people to take shelter," Tuesday's false alert read. Hawaii sent out a similar message three days ago.
The president said any talks with North Korea would have to be "under the right circumstances." He spoke to South Korea's leader on Wednesday, after the two Koreas held high-level talks.
North Korea is known for its extensive military tunneling. Along with training thousands more troops, officials say the Pentagon is buying specialized gear such as night vision goggles.
It was the first such talks between the two countries in two years, with Seoul hoping for further dialogue that might lead to reunions between families divided by decades-old standoff.
President Trump enters his second year in office, fresh off his first legislative victory. Are there more to come? What about that Russia probe, hot spots overseas — and those midterm elections?
In the latest tweet to ratchet up tensions with Pyongyang, the president responded to the North Korean leader's New Year's address, in which he warned that his missiles could reach all of the U.S.