I usually deal with TSA pretty successfully.. if they ask me or anyone in my traveling group to step aside for a pat down or full body scan I just use an old trick of mine:
Here is the step by step process:
::Waves arm in arching motion::
Me: "These aren't the humans you're looking for."
TSA: "These aren't the humans we're looking for."
Me: "He can go about his business."..
TSA: "You can go about your business."