Air traffic control personnel "would have known immediately" of a crisis when the planes veered away from their normal route, according to Chris Yates, aviation security editor of Jane's Defence Weekly.

BBC: Cockpit drama of doomed planes

"He understands the way police departments work: the policies, the procedures, the response times, '" said Brandon Webb, a security expert and editor of SOFREP.com, the Special Operations Forces Situation Report.

CNN: February 9, 2013 -- Updated 1735 GMT (0135 HKT)

Philip Baum, London-based editor of Aviation Security International magazine, says would-be terrorists could easily slip through security checkpoints, even with new regulations that check for liquids.

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Kenneth Reid, editor of Spear's Security Industry Analyst recommends buying shares of OSI Systems , the Hawthorne, Calif.

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"He understands the way police departments work: the policies, the procedures, the response times, '" Brandon Webb, a security expert and editor-in-chief of SOFREP.com -- the Special Operations Forces Situation Report.

CNN: February 9, 2013 -- Updated 1435 GMT (2235 HKT)

Ferrand is a research analyst and editor of "The Americas Report" of the Menges Hemispheric Security Project.

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She is the Jerusalem Post's deputy managing editor and is senior Middle East fellow of the Center for Security Policy in Washington, D.

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Editor's Note: This was originally posted on The Department of Homeland Security blog.

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Ed Bedington, editor of Meat Trades Journal, says the Findus horse meat case has brought into question the security of supply chains.

BBC: Horsemeat scandal: How often does food fraud happen?

Glick is the senior contributing editor of the Jerusalem Post and the senior fellow for Middle Eastern Affairs at the Center for Security Policy.

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