A wildfire that forced the evacuation of 35,000 people from the edge of Colorado’s second-largest city has killed at least one person and incinerated 346 homes, making it the most destructive blaze in state history, officials said on Thursday. Lighter winds helped firefighters gain new ground against the inferno, which had roared unchecked on Tuesday night through communities in the northwestern corner of Colorado Springs and threatened the U.S. Air Force Academy campus in town.