A 23-year-old man is facing criminal-homicide charges after shooting and killing his 56-year-old coworker on Tuesday following an argument over a beverage. Both men were employees of the U-Haul self-storage facility at 3741 Annex Ave. in Nashville, Tennessee. U-Haul employees aren’t permitted to carry weapons at work, according to company press release. Related:Tenant Steals From Fellow Renters at Hillsboro, MO, Self-Storage FacilityPhoenix-based U-Haul owns and manages more than 2,100 self-storage facilities comprising approximately 98 million square feet across North America. Sources:KBTX, Man, 23, Accused of Fatally Shooting Co-Worker at U-Haul Store After Argument Over DrinkWSMV, Man Arrested in Fatal Shooting of Co-Worker After Argument Over Drink at Nashville U-Haul, Police Say