I fly internationally about 5 times per year, so I made about 30 to 40 trips in the past 6 years to the same country. I have a business visa in Colombia, and have had it for 6 years now.

I have been stopped by security before (once 3 times in the same trip), and they usually go through my bags real quick and that is it.

This time (yesterday) was much different.

I went through the automated system where they ask you some questions and print out a form. I did not bring anything into the country, no money, and I checked "NO" to everything like being around livestock, and always do pretty much the same.

I always am traveling to the same address in NY, coming from the same country (Colombia). I am a US citizen.

I have had the same business, and been in the same line of work for almost 20 years.

This time, I got the printed form, and it had a big X on it, but the agent wrote HSB and INL on it. I was then sent for additional screening (I was in Chicago at the time).

They went through all of my suitcases and bags, and interrogated me, and were a little rude to me, and the process lasted about 20 minutes to 30 minutes. They read every piece of paper, looked at photos on my camera, asked for all of my hotel receipts, wanted to know who I spoke to in Colombia, thoroughly checked everything. He even read my handwritten notes in my notebooks, read my prescription, asked my why I had a portable heater (because of the cold weather obviously). he wanted to know why I had 20 packets of vitamins, which he thought was excessive. stupid stuff like that.

I was told I couldn't put my hand in my pockets, I could not stand near him during the process, and I could not touch anything.

I am curious if anyone knows what HSB or INL means, which were written on the forms. I was directed to additional screening because the officer saw it written on my form.

Usually I have no problems and am curious as to why suddenly they need to go through all of my stuff.

thankyou