On Gatun Lake, in the Panama Canal Zone, floats a little fleet of motorboats. They are blue-grey, stubby, oldso old, some of them, that they are kept lake-worthy mainly by the heroic ingenuity of their soldier crews. The soldiers who run the boats call them the third-ocean fleet. They are the supply boats of one of the finest, least-known outfits in the U.S. Army: the Panama Coast Artillery Command.
Each day, from docks along the lakeside, the stubby boats chutter off with men and supplies for the listening posts, anti-aircraft gun batteries, searchlight positions which stud the green, hot hills around the...