you what we know." 

 Bright floodlights illuminated the yard and a crew of soldiers were stringing telephone wires from the guarded front gate across the open space to the ranch house. Beyond the new barbed wire fence, there was an excited stir and rush for the wire as a sharp-eyed newsman spotted Johnny and the scientist crossing the yard. The two men ignored the shouted requests for more up-to-the-minute information as they walked into the barn. Johnny switched on the lights. 

 The lowing of the two prize Guernseys in the stalls at the right of the door changed to loud, plaintive bawling as the lights came on. Both cows were obviously in pain from their swollen and unmilked udders. 

 "Seeing is believing. Doc?" Johnny asked, pointing to the cows. 

 "Seeing what?" Peterson snapped. 

 "I knew we were going to have some tall explaining to do when you fellows took over here," Johnny said, "and, of course, I don't blame you one bit. That was some blast Hetty set off out there." 

 "You don't know," Dr. Peterson murmured fearfully, "you just don't know." 

 "So," Johnny continued, "I deliberately didn't milk these cows, so that you could see for yourself that we aren't lying. Now, mind you, I don't have the foggiest idea WHY this is happening, but I'm going to show you at least, WHAT happened." 

 He picked up a pair of milk buckets from a rack beside the door and walked towards the cow stalls, Peterson trailing. "This." Johnny said, pointing to the larger of the two animals, "is Queenie. Her milk is just about as fine as you can get from a champion milk producing line. And this," he reached over and patted the flank of the other cow, "is Sally's Cloverdale Marathon III. She's young and up to now has given good but not spectacular quantities or qualities of milk. She's from the same blood line as Queenie. Sally had dried up from her first calf and we bred her again and on Wednesday she came fresh. Only it isn't milk that she's been giving. Watch!" 

 Kicking a milking stool into position, he placed a bucket under Queenie's distended bag and began squirting the rich, foaming milk into the pail with a steady, fast and even rhythm. When he had finished, he set the two full buckets with their thick heads of milk foam, outside the stall and brought two more clean, empty buckets. He moved to the side of the impatient Sally. As Peterson watched, 

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