Ignoring a request/notice/information provided by OP and doing something
that could potentially be fatal shouldn't be taken lightly. Whether the OP
had the ID or not, his request not to use a metal detector should not have
been ignored.
Believe me I agree with you! (see my earlier post) But there are so many people who feel that if you do as you are told you have nothing to worry about.... the media seems to lean that way most days (think FOX).