5 things to know for March 21: Heathrow Airport, Musk at Pentagon, Social Security data, Ukraine, Bridges

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An Olympic swimming champion from Zimbabwe made history this week when the International Olympic Committee elected her as its new leader. Kirsty Coventry will be the IOC’s first female and first African president. Here’s what else you need to know to Get Up to Speed and on With Your Day. Here’s what else you need to know to Get Up to Speed and On with Your Day. Global travel was disrupted today when a “significant power outage” at an electrical substation prompted the complete shutdown of Heathrow Airport in London. The outage occurred when a transformer at a nearby substation caught fire overnight. The shutdown at one of the world’s busiest travel hubs could affect more than 1,300 flights. “We expect significant disruption over the coming days and passengers should not travel to the airport under any circumstances until the airport reopens,” the airport stated. The cause of the substation blaze is under investigation. Elon Musk is expected to visit the Pentagon today at the invitation of Defense Secretary Pete Hegseth. A Pentagon spokesperson said the tech billionaire was “just visiting.” However, a report in The New York Times said Musk would be briefed on the US military’s top-secret plan for any potential war with China during his visit. In a late night post on Truth Social, President Donald Trump denied that claim. The visit comes as the Pentagon, encouraged by Musk’s Department of Government Efficiency, considers major cuts to the top of the military in an effort to embrace the Trump administration’s push to shrink the federal government. A federal judge issued a temporary restraining order blocking the Social Security Administration from giving members of Elon Musk’s DOGE team access to agency data containing individuals’ personally identifiable information. The judge said the Trump administration had failed to show why the group needed “broad access to millions of Americans’ sensitive” data, and likened the DOGE team’s demands to a “fishing expedition.” She also ordered DOGE affiliates to delete any personally identifiable information they had already acquired from the agency and to remove any software they had installed on the SSA’s computer system. Russia launched a large-scale drone attack on the southern Ukrainian port city of Odesa overnight that hit civilian infrastructure, injured at least three people and sparked a massive blaze. The strike came just days after Trump attempted to negotiate a temporary ceasefire between Russia and Ukraine — but only succeeded in getting the two countries to agree to temporarily halt attacks on energy infrastructure. Peace talks to end the conflict are scheduled to resume Monday in Saudi Arabia.