Earlier quoted context omitted.
Many photographers travel with a flare gun or starter pistol in their equipment case specifically for this reason. The $10/hour grunt workers can't get access to your super-expensive equipment if you're transporting a gun and have the case properly secured.
It doesn't make your equipment any safer, guns are stolen from US airports all the time: Although the law requires guns to be carried in locked, hard-sided cases, baggage handlers have no problem getting into such luggage, he said. The other possibility, experts said, is that TSA screeners who X-ray or inspect bags by hand could be pocketing the guns. Source: http://articles.chicagotribune.com/2006-08-14/news/0608140…
Yes, anything can be stolen (whole luggage even). Put in a real case, with a serious lock, which legally cannot be opened without you, and you've significantly improved the odds of seeing that camera (and "bodyguard" gun) again.
Just because improving the odds didn't reach 0.0 doesn't mean it's 1.0.