Then that person shouldn't mind having the pressure cooker checked, to make SURE it's empty, and possibly even the lid held by the flight attendants for the duration of the flight. After all, wouldn't he want to know the flight was safe for himself, as well as the other passengers? ;o)
Who is going to open it though if it is closed? What if the trigger next time was opening it? I don’t know..seems very problematic since that is what they use for IED’s all over the Middle East.
It seems to me this is either an in your face thing or testing and weakening the response by using CAIR to sue. Nobody has been flying with pressure cookers until now that anyone has heard of...the TSA and others checking these things have known for years that pressure cookers are used for IEDs.