"The use of a fake 'mosque' in this type of drill sends the wrong message to law enforcement officials who may now view mainstream institutions, such as Islamic houses of worship, as potential security threats," according to Ahmed Rehab, executive director of CAIR-Chicago. "Officials must be trained in dealing with hostage-taking and responding to chemical, biological or bomb attacks. We are only questioning the wisdom of linking the American Muslim community and its institutions to such incidents."