Operation Big Itch
... that U.S. testing during Operation Big Itch successfully dispersed rat fleas from an aircraft?
... that U.S. testing during <b id="mwBDU"><a href="./Operation_Big_Itch" id="mwBDY" rel="mw:WikiLink" title="Operation Big Itch">Operation Big Itch</a></b> successfully dispersed <a href="./Rat_flea" id="mwBDc" rel="mw:WikiLink" title="Rat flea">rat fleas</a> from an aircraft?