The report will be discussed during a public briefing from 11 a.m. to noon in the Lecture Room of the National Academy of Sciences building. On hand will be committee chair Edwin P. Przybylowicz, retired from Eastman Kodak Co., Rochester, N.Y., and committee members Alexander Beveridge, retired from the Royal Canadian Mountain Police, Vancouver; Karl V. Jakob, Dow Chemical Co., Midland, Mich.; and Ronald L. Simmons, Naval Surface Warfare Center, Indianhead, Md. Reporters who wish to reserve a copy of the report or register to attend the briefing must call in advance.