Hogan tries to keep a fortune in art from winding up in the collection of a general. Plot Details: It is late at night and Newkirk and LeBeau are busy sneaking Underground Agent Lisa into the camp via the Emergency Tunnel. The smooth Newkirk gently cradles Lisa as she enters the tunnel, and the witty LeBeau tries invokes Newkirk's ire by leaping into his arms to be cradled the same way. A little later, Hogan begins inspecting several photographs Lisa has given him. They are of a nearby old abandoned mine which hasn't been used in years, until now. The Germans have sealed the mine with a reinforced steel door and installed a camouflaged sentry box nearby. All present wonder why the Germans would be interested in such a seemingly simple mine, but since Hogan has no ideas, he instructs Lisa t