When you arrive at the building in the morning and enter the doors, there are usually a couple of police officers there. Those officers politely make you walk through this object called a metal detector. I know that grasping the objective of this machine can be difficult, but please try. It detects metal. Your cell phone - you guessed it - has metal components. That metal coffee canister - you guessed it - made of metal. Those aviators on your head - you guessed it - made of metal. iPod? right again! Metal. Unsure? Err on the side of caution and put it through the metal detector.
Finally, please be curteous and be prepared when you arrive at the metal detector. We don't all want to wait for you.