By EJ Photo: Getty Images A California couple is facing involuntary manslaughter charges for accidentally sparking a massive wildfire during a gender reveal party last year. The couple held the party at El Dorado Ranch Park, using a "smoke-generating pyrotechnic device" designed to release blue or pink smoke. The device ended up setting fire to the dry grass - sparking a fire that would burn more than 22,000 acres across two counties, San Bernardino County District Attorney Jason Anderson revealed. The couple, Refugio Jimenez Jr. and Angela Jimenez, are facing up to 20 years behind bars. They're due back in court Sept. 15th.