A man has been critically injured in a fire at a Tacoma apartment Thursday. The fire broke out around 6:30 a.m. in an 11th floor unit at the Orion Apartments on St. Helens Avenue, according to Joe Meinecke with Tacoma Fire. Firefighters arrived to find the apartment unit full of smoke, but credit a sprinkler system from keeping the fire from spreading to adjacent units and helping firefighters douse the flames.