NBC Nightly News S2026E56 - Mar 4 Wed

New video shows the massive blast after a U.S. submarine torpedoed and sank an Iranian navy ship, the first time since World War II an American sub has destroyed an enemy vessel that way, as the Pentagon says U.S. and Israeli strikes have sharply reduced Iran's missile and drone attacks. NBC News' Richard Engel reports. WIth Iran continuing its drone and missile attacks in the Middle East, travel has been chaotic. The Trump administration says it is chartering flights and opening up seats on military planes to help stranded Americans. NBC News' Keir Simmons reports. A plane struck homes before crashing into a backyard in Phoenix, Arizona. Officials say the instructor and student on board were injured along with one person who was inside one one of the homes hit. All three remain in stable condition. NBC News' Steve Patterson reports from the scene. Today's hearing was heated - and at times salacious - as Homeland Security Secretary Kristi Noem was grilled on whether she had an affair with one of her top aides. NBC News' Ryan Nobles has the story. The Republican Senate primary in Texas is headed to a runoff, with incumbent Sen. John Cornyn facing off against Texas Attorney General Ken Paxton. President Trump says he will soon make an endorsement in the bitter race, and will encourage the other candidate to drop out. NBC News' Melanie Zanona explains. NBC News' Tom Llamas reports on the life and legacy of one of the biggest names in college sports. Lou Holtz coached six college and university teams, most notably at Notre Dame where he led the team to a national championship.