I really shouldn't laugh...but I did

Baggage screeners at Newark Liberty International Airport spotted - and then lost - a fake bomb planted in luggage by a supervisor during a training exercise.

[...]

In Tuesday night's test, a TSA supervisor secretly placed the bomb, which was designed to resemble the plastic explosive Semtex, inside a bag that was put through screening machines, [Ann Davis, a spokeswoman for the Transportation Security Administration,] said.

A baggage screening machine sounded an alarm, but workers somehow lost track of the bag, which was then loaded onto a Continental Airlines flight.

This really isn't funny at all. But I've got the giggles...I just can't get over the fact that they "somehow lost track of the bag"!