By spring 1962, construction had begun on the biggest screwworm factory yet, at an abandoned Air Force base near Mission, Texas. Eventually capable of producing more than 200 million screwworm flies a week, the Mission factory was a grotesque marvel of insect-producing efficiency. Operating 24 hours a day, 365 days a year, it was, in essence, a 76,000-square-foot artificial wound. Trays full of meat, blood, and water, each one heated to the exact right temperature to stimulate screwworm growth, moved through the facility on a monorail system timed to the lifecycle of the screwworm. Eggs would be placed in on the trays, hatch into larvae, and collectively feed on the bloody nutrient sludge, creating a “seething mass that is difficult to believe unless you’ve seen and smelled it.” After several days of growth, the larvae would wriggle out of the feed and fall into a water-filled trough, which gently carried them into sawdust-filled trays where they would pupate. The pupae would then be collected into canisters, which in turn were loaded into large casks containing highly radioactive cobalt-60. The irradiated, sterilized pupae were then packed into cartons, loaded into refrigerated trucks, and sent to distribution centers, where they would eventually hatch, be loaded onto planes, and dropped by the millions.