police caught baggage handlers at miami international airport stealing from passenger luggage after installing a hidden camera .
this as it is revealed that airline customers have reported $ 2.5 million in lost property from 2010 to 2014 .
31 employees have been arrested for theft at miami international airport since 2012 , including six this year .
there have been 30,621 claims of missing valuables since 2010 , with most claims coming from john f. kennedy airport in new york .
since 2002 , the tsa has fired 513 workers for theft , though it is now known how many of them faced criminal charges .
last year , 16 employees at los angeles international airport were fired for theft after police searched their homes and found luxury items .