Transportation Security Administration agents say they encounter some dangerous and strange things at checkpoints.  A find at Milwaukee’s Mitchell International Airport has made the T-S-A’s top-10 list of unusual items.  Agents say they found what they are calling “aggressive odor-eaters” in the soles of a pair of shoes owned by one traveler.  The photo posted on the T-S-A blog shows the man apparently stuffed shoes in his travel bags with two inert grenades.  The blog doesn’t say what the man was planning to do with grenades.