When the Missouri steamed into Tokyo bay to accept the Jap surrender, there were so many people and so many troops in Tokyo that the entire Pacific US Air Corps was airborne, and fully loaded for bear, and ready to carpet bomb the city in case of a surprise attack by the Japanese army. Not exactly a burned out depopulated hulk of a civilian city.
The firebomb raid on Tokyo burned down 16 square miles of the heart of the city and that areas was said to have at least 100,000 people per square mile. Anybody caught up in that **** would have not have even known which way to run; there'd have been an even chance he'd be running INTO it. You do the arithematic....