Full interview: Archaeologist details finding 480-year-old gun

Archaeologist Dr. Deni Seymour spoke with FOX 10's Nicole Krasean on Dec. 4 about finding what's believed to be the "oldest" firearm ever found in the continental United States. Excavations along the Santa Cruz River in Southern Arizona brought to light a bronze cannon, or a wall gun, used during the 1539-1542 expedition led by Francisco Vázquez de Coronado to the modern-day American Southwest.