Practice \lcr*s These are usually conducted on Saturday or Sunday, and require about two to four hours of watch ing Practice alerts are planned about once a month. 'I he Ground Observer Corps is administered by Civil Defense authorities and personnel are trained bv U S. Air Force tech nicians of the Regular Service. Purpose rf the Corps to do pro vide for an air attack warning System, to tie in with the Ail Force's radar systems and regular service ob-erver units. The na ' tional plan envisages the whole of the U. S. protected by “local eyes." To Help Radars Mr Weinberg explained that there are altitudes where radar loses its effectiveness and that it is in these areas where local posts can be most helpful Men, women and v-utlis of high school age are eligible to partici pate as volunteers. They are pro vided silver observer wings and official certificates as members of the Ground Observer Corps. The meeting Wednesday night featured a film on air defense r reparation by the Air Corps, showing the actions of let fight ers. defense flights, "enemy" b- mber attarks. and operation of the radar screen across the U. S. It is into this safeguard chain that the local links are to be forged.

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