The terror alerts announced over the last week by the Department of Homeland Security have reinforced a crucial reality: There are clear and present threats against a variety of private sector targets. Many of our country’s financial institutions, chemical plants, oil refineries, and nuclear facilities are owned and/or operated by private enterprises. Although during these times of heightened security these high risk targets’ safekeeping may be enhanced by law enforcement, many times the front line safety of these important parts of nation’s infrastructure is the primary responsibility of private security. An article posted on USATODAY.com, “Private Security Guards Are Homeland’s...