FT. STANTON PRISON CAM I' NOW ENCLOSEDWartime precautions have chang- !ed tthe Immigration ServiceV three j detention camps intto virtual prisons, with protective and alarm sys- jtents regarded as Sfoolproof, anofficia disclosed Sunday.Prior to the war, the camps atFort Lincoln, N. D* and Fort Missoula, Mont., wlt;ere fenced in and patrolled by men carrying sidearms. ,e csmp at Fort Stanton, N. M., jwhere 410 members of the Columbus crey are held, was not even fenced. !Now Fort Stanton has been enclosed. All three camtps are patrolled 24 hours daily by automobile and horse-mounted guards, all armed with sub-machine guns and gas guns. TV.e fences are flood-lighted at night »nd 24-hour watches are maintained in towers, the watchers armed with high-power rifles.Fort Missoula now has 100 Itali-Ians and 060 Japanese. Fort Uncoln ' 'Was 422 Germans.