The Transportation Safety Administration has had strict security measures in place ever since 9/11.
But one of those measures, currently being implemented at airports all across the county, is raising a few eyebrows. We're not talking about pat downs or body scanners.
These measures are happening after you pass through the security checkpoint.
It's called "random gate screening." If you purchase a bottle of water or coffee at a location past the security checkpoint, you may be subject to secondary screening before boarding a plane.
Video shows TSA agents in Columbus, Ohio. In their gloved hands contain a test strip and a dropper containing a non-toxic solution. They approach passengers before boarding, testing their drinks.
The TSA agents do not put the test strip into the beverage -- they wave it over the opening, then put the solution on the test strip to see what may come up.
We're told this is nothing new -- and has been happening randomly since 2006.
FOX 10's Anita Roman talked to fliers about how they feel about this measure.