WBFO News Firefighters put out hot spots at the Premium PPE warehouse on the morning of July 21, 2021 after a large fire burned overnight. Fire crews continued to put out hot spots Wednesday morning at a Williamsville warehouse storing personal protective equipment, after finally getting the fire under control overnight. Meanwhile, an investigation is now underway into what caused the blaze. Brad Sprague, chief of the Main Transit Fire Department, revealed the extent of the damage while speaking to reporters at the scene. He said the warehouse’s rear roof and walls collapsed in the blaze, while the office portion of the building was still intact.