Yep, similar story - they flagged my messenger bag for the 1" of water in the bottom of my stainless steel water bottle and made me go back, empty it out, and run my bag through the x-ray machine again.
OK, fine. But while I was opening my bag to remove the water bottle, I noticed my 3" folding knife clipped to the front pocket with my pens, etc! I very quietly emptied the water, closed up my bag and ran it back through the x-ray. They were satisfied and I was on my way.
Needless to say, I breathed a huge sigh of relief. (And feeling bold, left the knife in my bag for the return trip. Again no problem.)
OK, fine. But while I was opening my bag to remove the water bottle, I noticed my 3" folding knife clipped to the front pocket with my pens, etc! I very quietly emptied the water, closed up my bag and ran it back through the x-ray. They were satisfied and I was on my way.
Needless to say, I breathed a huge sigh of relief. (And feeling bold, left the knife in my bag for the return trip. Again no problem.)
Edit: typos.