(Seattle, WA)  --  The families of a Seattle couple killed in a mass shooting that also injured an Oregon man during an electronic music festival last summer in Washington are filing a lawsuit.  Thirty-one-year-old Andrew Cuadra of Eugene suffered a gunshot wound in the attack last June at the Beyond Wonderland EDM festival at the Gorge Amphitheater.  Family members of the two women killed in the shooting, 29-year-old Brandy Escamilla and 26-year-old Josilyn Ruiz, are suing event organizer Live Nation and its security contractors.  They argue the companies had both the means and the responsibility to do more to prevent the shooting.  Court documents show 26-year-old James Kelly of Joint Base Lewis-McChord told detectives he took psychedelic mushrooms and started to believe the world was ending before pulling out a gun and opening fire.