The Transportation Security Administration is the federal agency everybody loves to hate. Call them “necessary evil” if you will, but bad-mouthing them all the time is not always fair.

Some checkpoints have been organized in a way that makes the job easier, while others are lacking the infrastructure or staff to get people faster through security.

While many people don’t understand why checking people’s belongings can take so long because “I’m not carrying anything dangerous,” you may be surprised at what other people have in their luggage. As many as 2,653 firearms, 83 percent of them loaded, were discovered in 2015 in carry-on bags at checkpoints across the country--seven a day on average--according to a TSA report.

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Believe it or not, TSA agents don’t like slow lines either, but passengers share some of the blame for the slow processing. As one former TSA agent told Fox News: “I always found it surprising that people did not know they had to remove shoes, laptops, liquids, etc.”

Doing that as you’re about to get screened only holds up the line. Check out some of the country's worst TSA checkpoints.

1)  John F. Kennedy International Airport – New York City

The John F. Kennedy International Airport has by far one of the worst TSA checkpoints. According to cntraveler.com the average wait time is 16.8 minutes.  One individual wrote a review on airlinequality.com, in which he explained that “the queue was massive and moved exceedingly slowly" and that "it took over an hour to check in and then there was the queue for security.”

Another reviewer wrote: “At New York JFK as I was going through security, there were many passengers there who clearly did not understand English or the confusing security procedures we were required to go through and the staff had absolutely no patience for them. Confused looks were met with insulting and sarcastic remarks from staff.” More complaints are written in other reviews.

2) Newark Liberty International Airport – Newark, N.J.

Newark Liberty International Airport (EWR) has been known for employee misconduct and theft. According to nj.com, a few years ago “the TSA said four of its employees at Newark Liberty International Airport were dismissed and dozens of others were suspended this week in an investigation of lax baggage screening and supervision." Another six employees were exonerated during due process hearings. The average wait time at Newark’s checkpoint is 16.5 minutes.

3) Orlando International Airport – Orlando, Fl.

Orlando International Airport is said to be extremely unorganized. According to a recent yelp review, one individual explains: “MCO was a sea of people and the lines extended way beyond the stanchions...it was a mess. For some reason, my line moved insanely slow to the point I was worried about catching my flight. By the time I got up to security, they were trying to move everyone so quickly that we didn't have to do the normal, shoes off/laptops out procedure. They were funneling people through as fast as possible in what seemed like an effort to make sure these planes had people on them.”

4) Los Angeles International Airport

A not so happy individual  reviewed Los Angeles International Airport:  “The TSA at LAX is an island of mediocrity in a sea of horrendous government bureaucracy designed to trick the public into thinking they’re safe.” He also explains: “I’ve seen policies and basic rules broken left and right.  I’ve seen screeners on power trips over cowering unknowing passengers. They almost managed to destroy my laptop, then laughed about it.” Now, if that doesn’t sound like one of the worst checkpoints, I’m not sure what is.

5) Louisville Regional Airport – Louisville, Ky.

 A seemingly annoyed individual reviewed Louisville Regional Airport: “I arrive at the Louisville airport TSA security check point. They let a few people in front of me through, then a family and when they got to me, they closed the non-X-Ray line and force me to enter the full body scan line. After that I find my bag being inspected by one of the rudest people in my entire life. He proceeds to go through my entire bag and even touch my toothbrush! He then runs my bag through the machine again, to end up going through a second smaller bag that was in my suitcase.”

Can’t stand the worst? Check out the Best TSA Checkpoints in the U.S.