A water tank exploded in a Central Valley community, lifting 70 feet into the air, killing a man and prompting a state of emergency in the city of Lemoore this week. The incident was captured on astonishing surveillance video. When the 1.5 million-gallon city water tank ruptured Monday afternoon, the massive container flew into the air, then crumpled on impact, authorities said. City officials released new footage Tuesday night that captured the moment the tank exploded, hurting a city employee and killing a contractor.