Kum & Go is joining the American Red Cross disaster relief effort in Oklahoma. The convenience retailer is harnessing its network of more than 400 stores across 11 states to raise money for the victims of the deadly tornados in Oklahoma. Kum & Go’s in-store campaign gives its customers the option of adding $1 to each purchase they make at a Kum & Go store. Every dollar donated will go directly to the Red Cross for relief efforts. The campaign will run through Friday, May 31.