(Bloomberg) -- Delta Air Lines Inc. is planning to sell investment-grade bonds Thursday to help repay a government loan it took out during the pandemic to pay employees.Most Read from BloombergICE Moves to DNA-Test Families Targeted for Deportation with New ContractNext Stop: Rancho Cucamonga!The Global Struggle to Build Safer CarsUS Housing Agency Vulnerable to Fraud After DOGE Cuts, Documents WarnNYC Residents Want Safer Streets, Cheaper Housing, Survey SaysThe airline is marketing three-year