Originally Posted by bocastephen

You're missing one point - how does running a liquid or gel through an x-ray identify the chemical composition of the contents?

Hopefully you're not like some of our scientifically-challenged screeners who think you can detect a chemical explosive by running a container through an x-ray machine.

Biological weapons? You think the TSA has even a snowflake's chance in hell of finding a biological weapon? Guess what - when the time comes for terrorists to try that route, the delivery system won't be a bottle in someone's pocket - it will be a passenger spreading the contagion on a flight, and those passengers spreading it further...and so on and so on.

I regularly sneak small bottles through the checkpoint hidden in my pocket and within my bag - for years I've been a professional-grade 'artful concealer' and I'm proud of it.