"We must stop that stuff from getting out of here," I said at the end. "In fact, if possible we should blow up the tank cars and let it all run out and at the same time try to put the laboratory out of action. It won't do much good now for us to take the virus home ... there would be too little time to produce a vaccine against it even if we have the formula."

"There's a railway bridge about two miles from the plant, about four from the way we'd have to go, that crosses a deep ravine," Makstutis said. "It's on the spur line from the main Wonsan-Vladivostok railway. That's the only way out of this fever factory of theirs. We can put demolition charges on that to blow when the train goes over. There's only three or four bridge guards. I'm sure we could cut the telephone wire and handle them before the train gets there."

"Suppose not all the tank cars are destroyed," Kim said. "Could they use that crap again, or would they go near it?"

"Yes, they would," I said. "Some of the technicians are protected by immunizations."

"Then somebody has to be designated to explode the tanks in case they survive the drop," Blackie said. "And what about the train guards?"

"You're so right!" I said. "That makes me the mouse that ties the bell on the cat. You boys hold off the guards, I'll get the tank cars."

"Hell, Doc, you've lost your marbles!" Makstutis burst out in amazement. "That's our job. We've got to keep you all wrapped up like a dame in mink so you can tell them back home what's in that lousy stuff."

I laughed at his pop-eyed indignation. "That's true ordinarily, Mak," I said, "but this new virus is one hundred percent fatal if you get it. Anybody who blows those tanks is likely to get some on him, especially since they'll be damaged by the fall into the gorge. But people who've had this hemorrhagic fever are partly protected, especially while they are in the convalescent stage, as I am, so I'll have to explode the tanks."

"I still don't like it, Colonel," Blackie said.

"Look, Blackie, if you get this new fever you die for sure ... and probably all the rest of the unit will die too. Then how do I get back to the States?"