_One knee on the ground, Justin Garnett, 27, scraped an elderberry stem with a knife he made from volcanic glass. Within 30 minutes, he turned the stem into a weapon favored by Aztec war gods. The weapon is called atlatl, pronounced "AT'-lat-ul". Its name originated from the Aztec language, meaning "water thrower" for hunting fish and mammoths. It wasn't until 2007 when the atlatl could be used in Missouri to hunt small game such as squirrels. In November, Missouri will become the second state in the U.S. where this weapon, which dates to at least 28,000 years ago, can be used to hunt deer. Alabama took the lead in 1996.