Dudley Salmon from the Bureau of Alcohol, Tabacco, Firearms and Explosives unit, or ATF, shows students in the IUPD cadet program the damage done to a coffecan after a blasting cap was detonated Wednesday at the IU cross country course. Officers from the ATF and the Indiana State Police bomb squad gave an explosives demonstration to the cadets that are currently enrolled in the Office Program. The explosives demonstration started small with the blasting cap in the coffeecan and ended with the detonation of a gallon of gasoline, which is often called "The Hollywood," (pictured left) due to the large noise and fire it produces. Courtney Deckard