As you can see on the map, some airports confiscated way more weapons that you'd think they would, considering their locations and flight volumes. For example, Alaska's Anchorage International Aiport, the 55th busiest in the US, confiscated 434 dangerous items while Los Angeles International Airport, one of the nation's busiest, confiscated only 199 dangerous items.
"My expectation before going through the data was that the number of items confiscated in each airport would be roughly proportional to that airport's passenger traffic," Galka said via email. "That turned out to not be the case at all."
Additional maps show how some dangerous items were particularly prevalent at certain airports: