It&#x27;s <i>effectively</i> zero, so yes. Taking the gun statistic in their blog [0]. Let&#x27;s say they prevented a total of 5,000 noteworthy things ( that includes their gun statistic). I think that&#x27;s a reasonable estimate given their figures.<p>0.000007656967% of the time they did something. In reality it&#x27;s half of that. In reality of <i>actual danger being present</i> it&#x27;s even lower than half of that. I&#x27;m talking near 7.6e^-8  in rarity.<p>The odds of being stuck by lightning is higher than the TSA ensuring anyone&#x27;s safety.<p>[0] <a href="http:&#x2F;&#x2F;blog.tsa.gov&#x2F;2015&#x2F;01&#x2F;tsa-2014-year-in-review.html" rel="nofollow">http:&#x2F;&#x2F;blog.tsa.gov&#x2F;2015&#x2F;01&#x2F;tsa-2014-year-in-review.html</a>