WHERE DO NINJAS VACATION?

Coming back from Myrtle Beach today I was standing in the longest security line in America (what airport only opens one security line?), which gave me ample time to observe this sign.



My phone took a crappy picture, but the basic message was, "These Common Items Are Prohibited." I found it strange that they considered the following to be common items: butterfly knives, switchblades, brass knuckles and chinese throwing stars. Chinese throwing stars!? I guess a lot of ninjas fly in and out of Myrtle Beach. I didn't even notice.