It's a game that's been played for years among high school seniors, but for teachers and police, it could pose a safety risk.

In the game, players get assigned a random target they must "tag" with a water gun. At times, rules specify teams can't play the game during school hours or on school property, Arlington Heights ...

Lonnie Johnson: I'm Lonnie Johnson. I'm an inventor. The invention that most people know me for is the Super Soaker water gun. I knew the gun worked well, and I knew it would be successful.