CHAPTER XVIII

The Stingaree's Tail

"This is the plan," Steve Ames said. "Joe and Chuck will approach from upriver and go around the mansion fence by wading downstream. They'll stay under cover somewhere at the edge of the mansion grounds until they hear my signal on the radio to close in—or until they see the balloon launched. I'll go in the way I did before."

The two JANIG agents nodded, and bent over the chart borrowed from the houseboat.

"Cobb will set up his equipment here at my house," Steve continued, "and try to intercept all signals from the mansion. McDevitt will set up here too, and track the balloon through my telescope—if it rises—watching until the rocket fires. McDevitt also will keep in touch with Wallops Island by radio, and notify me on the walkie-talkie when the countdown reaches thirty minutes."

Steve turned to Rick and Scotty. "Before I go to my post, I'll take you two to the creek mouth in the runabout. Then you will swim up the creek, underwater, and take up stations in the weeds directly in front of the house."

Rick's pulse stopped. "They'll see our bubbles," he protested. "It would give the whole show away!"

Steve motioned to Joe Vitalli. "Show 'em."

Joe walked to the car in which he and Chuck had driven from Washington, and opened the trunk. He brought out a pair of riot guns, automatic shotguns, which he handed to Chuck, then he reached into the trunk and brought out a pair of small cylinders with full face masks attached.