New York By ALBERT X. LEMAX ALARM—The startling discov-j ery this week of a U-boat fuel base hidden in a remote bay on the Brazilian coast and operated by a ! disguised high ranking Japanese: office!' causes grave concern for | fear that similar danger spots are' being set up in Alaska. Sourdoughs and Army engineers say that the vast area is capable of surprises for defender and attacker alike. Most of the scattered isles are mountainous, rough and uninhab- i tables-no t fit for heavy plane landing but excellent for "toeholds" "toeholds" and aircraft and submarine submarine oil depots. Advance guards could be smuggled in and kept under cover for weeks before being being captured by our scouts. Even if far-flung U. S. patrols were on hand, the Japs would have the advantage over our inexperienced inexperienced men. Tojo's conquest of the Far East has given his soldiers soldiers a unique training for island- hopping warfare. The tactics suitable suitable for use against our northern dots of land would copy exactly those carried out by the Nips during during the past three months in the western Pacific. Their "gasa chutai"—or paratroop paratroop squadrons—have been practicing practicing sudden archipelago seizure with the remote atolls of the lost Netherland possessions as models, and with frightened Malayans and Polynesians as "substitutes" for Alaskan Eskimos. Thousands of years ago Mongolian tribes invaded invaded our continent by way of the Bering Straits steppingstones and spread south to become the American American Indians. Increasing signs alarm our military watchdogs lest the Yamate descendants of .the Asiatic nomads are on the verge of attempting to repeat the historical historical precedent.