GEOFF BENNETT: And we start today's other headlines here at home, where the official start of summer tomorrow is expected to bring a stifling heat wave across much of the country.

Already, large parts of the Western U.S. and the Upper Midwest are under extreme heat alerts.

Temperatures this weekend are expected to hit triple digits in some places, while dangerously high humidity will make it feel even hotter.

The extreme heat is expected to push east next week.

Meantime, Indiana is cleaning up after a line of severe storms blasted through the state yesterday, knocking out power for tens of thousands of customers, while flooding and rockslides closed a section of Interstate 40 near the Tennessee-North Carolina state line.

Hurricane Erick is making its way inland across Southern Mexico after making landfall this morning as a Category 3 storm.

It narrowly missed the resort areas of Acapulco and Puerto Escondido, crashing into a less populated area with top winds of 125 miles per hour.

Along the way, Erick smashed beachfront restaurants and fishing boats in Oaxaca state.

Forecasters expect the storm to weaken as it moves further inland and hits coastal mountains.

There are no reports of injuries or deaths so far.

Spain is rejecting a NATO proposal due next week that calls on member nations to commit 5 percent of GDP to defense spending.

Prime Minister Pedro Sanchez called that target unreasonable.

In a letter to NATO's secretary-general, he wrote that it would move Spain away from optimal spending and it would hinder the E.U.

's ongoing efforts to strengthen its security.

Spain was already the lowest spender in the 32-member alliance last year, allocating less than 2 percent to defense.

President Trump has pushed the 5 percent target, saying NATO leaders rely too heavily on the U.S. President Trump signed an executive order today allowing TikTok to continue operating in the U.S. for another 90 days.

The announcement on his social media platform allows the government until mid-September to try to negotiate a deal for the social media app, which is owned by China's ByteDance.

This is the third time the Trump administration has extended the deadline after Congress passed a law last year calling for its sale amid national security concerns.

TikTok currently has about 170 million users in the U.S. An investigation is under way after a SpaceX Starship exploded during preparations for a test flight.

The rocket was still on a test stand at the company's launch site in Southern Texas when it was engulfed in flames late last night.

You see it there.

The company says the Starship experienced what it called a major anomaly, adding that all personnel are safe and accounted for.

The Elon Musk-led company had already launched nine of these rockets in the last two years.

Six of them either exploded on takeoff or broke apart on reentry.

And financial markets and many federal offices were closed today in observance of the Juneteenth holiday.

It marks the day in 1865 when Union troops freed enslaved African Americans in Texas more than two years after the Emancipation Proclamation.

The day was marked in many ways.

In New Hampshire, residents of Portsmouth held a ceremony for the rededication of a memorial park that was a burying ground for enslaved Africans.

And in New York, performers from 15 different Broadway shows held a concert in Times Square, among the many commemorations unfolding across the country.

Still to come on the "News Hour": we examine the push to ban members of Congress from trading individual stocks; and a new jazz fellowship honors longtime musicians who often struggle financially.