Travel

• U.S. admits liability in Army helicopter collision with American Airlines jet that killed 67 people - The U.S. admitted fault in the deadly Army Black Hawk helicopter collision on Jan. 29 that killed all 67 people on board.
• Frontier Airlines replaces CEO Barry Biffle with carrier's president - Frontier Airlines is replacing its CEO, Barry Biffle, with the carrier's president.
• Southwest CEO says airline 'actively pursuing' network of airport lounges - Southwest's CEO said the carrier is weighing a network of airport lounges
• Trump administration waives $11 million fine for Southwest Airlines' 2022 holiday meltdown - The Trump administration said it will forgive the last $11 million of a fine against Southwest Airlines that stems from the carrier's 2022 holiday meltdown.