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.