“But it didn’t.” Sally felt a little sick. “I’ll just get back to my secret radio for a moment,” she said.

“Okay, I’ll take over.” He settled down in his place.

The messages she picked up on her radio were a jumble of sounds. Every broadcaster of the enemy subs was trying to talk to every other.

“We got their leader!” she thought as her heart gave a triumphant leap. “Now they’re all looking for orders and getting none.”

Her hope for a quick and easy victory over this new and more powerful sub pack was soon dashed to the ground. In a very short time there came into the enemy broadcasts a firmer and more confident note.

“Oh!” Sally exclaimed. “Some other sub commander has taken charge of the pack! Now there will be a real fight.”

Soon enough the fliers who went out to the attack found this to be true. Warned, no doubt, by the experience of that other sub pack, these subs came in with only their periscopes showing. Fred, who carried a radioman who was also a gunner in his two-seated plane, searched the sea in vain for a full fifteen minutes. Then suddenly he caught over his radio a call for help from one of the tankers.

“We’re about to be attacked,” was the terse message.

Only twenty seconds from that very tanker, Fred swung sharply about, barked an order to his gunner, then moved in.

“There’s the sub!” the gunner shouted. “Over to the left.”