Interop in most places is gone again until the next SHTF day.... Its only a word being used to buy new radio toys in too many places now. "We need this new system as it is so we can all talk together" A year or so later once its built,... "We need to be fully encrypted cause that meth lab guy has a cell phone app, and we cant risk him hearing us watching him... What, the Sheriff and State Popo need to be able to work with us when meth lab guy runs all over at over a hundred mph? BAHHHH!!! Let them hear static! (Yeah it does sound like Khan in STII don't it?)"