PHOTOS: The Los Alamos Fire Department issues the all clear and evacuated employees return to work this afternoon at the Municipal Building. County officials indicate that burnt food in a toaster oven at lunch time trigger the fire alarm and all employees were evacuated at about 12:30 p.m. today. The employees remained at the rear of the parking lot while police and firefighters entered to building. It took about 30 minutes for the responders to clear the building and lift the evacuation.