Plus, new video and 911 calls from Uvalde shooting, tips and tricks for summer travel and Queen Elizabeth to commemorates 70 years on the throne.

Later, he and families of the fallen plant a magnolia tree at the White House.

From appliances to clothing, ABC News’ Becky Worley breaks down which retailers are offering the biggest discounts on items for the holiday.

ABC News’ Victor Oquendo shares tips on how to find the best and worst times to hit the road and how to save money at the pump for travelers heading home after the holiday weekend.

Delta Airlines, which saw the most cancellations, said the issues stemmed from bad weather and “air traffic control actions.”

The USAA Poppy Wall of Honor -- honoring the more than 645,000 Americans who have been killed in military service -- returned to the National Mall for Memorial Day

Two thousand flights have been canceled since Friday.

ABC News' Becky Worley shares tips for hunting down this weekend's best deals.

Despite supply chain shortages and inflation concerns, there are still great deals to find on summer items this weekend if you know where to look.

Over the weekend, an estimated 34 million people traveled and more 7 million people were screened at airports between Thursday and Sunday. There were about 135,000 fans at the Indy 500.

At Arlington National Cemetery, service members placed flags at each of the 260,000 headstones in honor of the lives lost. Across the country, people paused to honor those who died in combat.

Representative Mark Takano discusses what Congress is doing to support those who have served our country.

Thousands of motorcycle riders rolled through Washington, D.C., to raise awareness about issues facing American veterans.

As the sole survivor, Beau Wise was told he would not be put in harms way -- the only service member to be kept from combat in the Afghanistan war for such a reason.

Big discounts and bargains are available for those shopping this Memorial Day weekend.

Lifestyle expert Valerie Greenberg is here with the lowdown on all the deep discounts.

ABC News’ MaryAlice Parks reports on food insecurity among military families and efforts by advocates and lawmakers to address the problem, which has worsened during the pandemic.

Americans are used to showing their patriotism on Memorial Day, but experts say this holiday many of the nation’s troops need more than a salute -- ​they need food.

There are high volumes of car traffic and airline passengers as people travel for Memorial Day weekend.

U.S. military service members placed flags at gravestones in Arlington National Ceremony in Virginia to mark Memorial Day.

The U.S. Air Force Thunderbirds squadron rehearsed ahead of their Memorial Day weekend show at Jones Beach State Park in New York.

More than 37 million people are expected to travel this Memorial Day weekend.

Tips to avoid traffic and what to expect on the road and in the air over Memorial Day weekend.

Americans hitting the road over the long weekend can expect to see the highest gas prices in seven years and for travel time to take at least 20% longer than normal, according to experts.

Major releases, like “Cruella" and “A Quiet Place 2,” will make their cinema debut during the holiday weekend, marking the start of the first summer blockbuster season since the pandemic began.

With 2.5 million Americans expected to fly over the long holiday weekend, Secretary of Homeland Security Alejandro Mayorkas shares how the spike in travel could affect your airport experience.

More than 37 million Americans are expected to take to the roads and skies in the busiest holiday weekend in over a year.

The long holiday weekend is known for its major deals, but product shortages to backlogs at shipping outposts like FedEx could hamper the delivery time of your orders.

TSA tells ABC News it estimates at least 6 million travelers over the long holiday weekend, which would be the first time the number would reach that high since the start of the pandemic.

Taking to the road over Memorial Day weekend? Experts say gas prices will be around $3 per gallon -- the highest since the 2014 holiday weekend, according to AAA.

Becky Worley reports on the biggest deals to look out for ahead of Memorial Day weekend.

As COVID-19 cases decline across the country, many U.S. residents going through New York will be able to receive vaccinations flying in and out of airports across the state.

Condé Nast Traveler editor Jesse Ashlock shares some last-minute travel ideas for the holiday weekend.

President Donald Trump honored both fallen troops as well as service members currently fighting the coronavirus or what he called, "the invisible enemy."

Here is how to watch some of the Memorial Day ceremonies and events being streamed online this year due to the coronavirus pandemic.

"Good Housekeeping" style director Lori Bergamotto joins “GMA” with big bargains that can revamp your home office, upgrade your kitchen and help you have fun in the sun.

Heartfelt tributes are underway from coast to coast. ABC News' Trevor Ault reports.

TSA says it screened nearly 350,000 passengers on May 22, the highest number of screenings since March 22, 2020, but still down 88% from this time last year.

The president ordered flags to fly at half-staff to honor coronavirus victims as military families share Memorial Day with the nation.

GMA’s Becky Worley shares tips on the best sales and discounts offered over the holiday weekend.

Americans are finding new ways to honor service members during the coronavirus pandemic.

Health officials are concerned that reopening may cause a spike in coronavirus infections.

Some dealers are offering unprecedented incentives including 0% financing for 6 to 7 years.

Chef Michael Symon demonstrates how to prepare bacon cheddar smash burgers.

Lori Bergamotto from "Good Housekeeping" gives tips on what to shop for this holiday weekend.

According to the Department of the Interior, Memorial Day weekend is one of the busiest times of the year for U.S. national parks.

As summer kicks off with Memorial Day, a top infectious disease doctor shares the latest on how to navigate socializing at a distance and breaks down her summer safety checklist.

The national average is $1.92 per gallon for gas, as cell phone data shows more people moving around the past couple weeks as states reopen.

ABC News’ Becky Worley looks at the retailers hoping to boost sales with discounts and what will be worth spending on vs. deals that could get better later in the year.

TAPS is a nonprofit that helps the family and friends of a service member who died by suicide cope and move forward.