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Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
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Posts: 102,617
At the very least, you should report it to DL.
BTW, for checked bags passing through the USA, either TSA locks are supposed to be used or the bag should be left unlocked, although AFAIK TSA is still required to put the notification in your bad if it's opened for "security."