Report questions effectiveness of Federal Protective Services . Plainclothes investigators test security at 10 federal buildings in 4 U.S. states . GAO agents able to detect components in restrooms , enter buildings . FBI spokesperson says changes occur but effects wo n't be seen for months .
Report questions effectiveness of Federal Protective Service . Plainclothes investigators test security at 10 federal buildings in 4 U.S. cities . GAO agents able to assemble components in restrooms , enter offices . Agency chief says changes made but effects wo n't be felt for months .