Earlier this year I had a connection in Doha, Qatar on my way to the US. I had to go through security twice even though it was a connection from another international flight (first was after getting off the first flight and the second was right before getting on second flight). Both times they took away all liquids, even those bought in the airport.
If you’re in the US and on a carrier that supports stir/shaken and voLTE, Carrion can block (or silence) calls that fail verification. It can also block calls from a block list.