Hidden weapons cause major security scares at MIA.

An upside-down car sparks a mystery; a K-9 unit sniffs out a deadly cache.

A security threat on an incoming flight triggers a SWAT response.

A string of baggage thefts have MIA staffers on high alert.

MIA ratchets up security for the president's arrival.

A fuel spill puts MIA on high alert and Customs intercepts contraband.