As hundreds of thousands of people filter through South Florida airports each day for Thanksgiving travel, don’t become one of many who have been found with a gun in their carry-on luggage. The mistake could be costly: a fine up to $14,000 and possibly criminal charges, the Broward Sheriff’s Office said in a news release Tuesday. More than 5,000 guns were intercepted by Transportation Security Administration at airport security checkpoints nationwide as of this October, equating to an average of 18.3 guns each day.