Yellow Corp., one of the country’s largest less-than-truckload (LTL) transportation companies, filed for Chapter 11 bankruptcy protection in Delaware on Sunday night.

Kirkland & Ellis was tapped to represent the debtors, who enter Chapter 11 with $1.5 billion in outstanding debts—including $730 million owed to the U.S. government from a pandemic-era loan that gave the U.S. a 30% stake in the company.