It was surreal to step out of a screening of “Only the Brave” in Hollywood last week to find the late-afternoon sky had turned a dusty rose-orange from the smoke and ash kicked up by the Canyon 2 fire in Orange County, California. Still a little verklempt from the movie, which starts out kind of corny but stokes emotion with its true-life tale of bravery and brotherhood, I for the first time considered the men and women on the ground in both Southern and Northern California fighting a mercurial…