Awesome episode!!! Some of the northern snake heads have been establishing colonies on the Potomac In MD for years now. Catch and kill orders. They say they havent been reaking the havok on native wild life as they suspected. Still I would hate to be hit by one of these agressive sp. when full grown, supposedly the are the second largest and can reach 4 feet. Kinda sucks cause You would think the rivers and lakes here in the U.S would be fairly safe besides of course the ones in the southern states that flow towards the gulf of Mexico.