I always recall that scene in Traffic where they have a meeting in a pool to thwart recording devices.
Honestly, idk how tf these top guys don’t take some time to learn sign language.
I remember Chin’s daughter saying they would write things, read them, then burn the paper.
right on with traffic scene....Also how about start tailing the people you are associating with and start using surveillance on them as to where they go and who they meet...kind of like they did in The Departed
