[Photo caption:] WARNING TO ALIENS--Printed in four languages, posters like this one, warning enemy aliens to "get out and stay out," are being placed in eight prohibited regions in Washington State, under the direction of Charles S. Burdell, special assistant to the attorney-general. Any Japanese, German or Italian alien found in a prohibited area after today faces possible internment for the duration. Most of the areas now prohibited are around dams, but it is expected that additional areas will be designated soon.