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.