An apparent TSA drill scared passengers at Sky Harbor Airport last week.
Video of the drill was posted on Youtube and is now making waves.
At least one passenger FOX 10 spoke with said people were scared when the drill took place in the middle of a terminal last week, past the security checkpoint.
TSA said this kind of drill has been going on for years but this is the first time some are seeing it, thanks to a passenger who took video.
Video taken at Phoenix Sky Harbor Airport, September 22 showed TSA employees ordering passengers who had already gone through the security checkpoint to stop in the middle of the terminal.
The video was recorded by passenger George Prepared.
"But there was a palpable sense of fear because we had no idea why this was happening," Prepard said.
Prepared said he was only able to capture the last 24 seconds of the roughly 2 minute event.
The TSA did not respond to FOX 10's request for comment Sunday, but in published reports, a spokesperson called it a "stop-all" drill, to prepare personnel in case of a security breach at the checkpoint.
"If they're going to do something that is a drill or a test then you have to be told you're going to be part of some sort of test," Prepared said.
In published reports, the TSA claims passengers are told about the drill in advance and are thanked for their patience.
No alert or thank you was heard in this video.
"There was a woman holding her daughter behind me who had a look on their face like 'oh no, what's going on...what's going on', that can't do anyone any good. An airport is a very sensitive place, it's a tension filled place so if they tell you to do something like that chances are people are going to be afraid and stand there, which seems to be the whole point of the exercise, which is what I found so frustrating of all," Prepared said.
The TSA has said this kind of drill been going on for 10 years but this is the first time many are seeing it. The Youtube video has more than 180,000 hits.