NEW YORK, March 1 The U.S. Federal Communications Commission said on Wednesday it was exploring what it could do to help law enforcement track down who has made telephone threats to almost 100 Jewish Community Centers across the United States in recent months. When asked for the FCC’s reaction to Schumer’s inquiry, agency spokesman Neil Grace on Wednesday issued a statement to Newsday saying the chairman “is very concerned about the bomb threats being made to Jewish Community Centers across our country”.