NEW : 38 Special is the 8th act to announce a SeaWorld cancellation . Martina McBride cites `` all the issues that have been aired recently '' in her announcement . Willie Nelson , Trisha Yearwood , ` This is a complicated issue , and we do n't claim to understand all of it , but we do n't feel comfortable proceeding with the gig at this time , '' the band said on its Facebook page . ` Cheap Trick , others already canceled . Online campaign asks acts to ditch SeaWorld after airing of `` Blackfish .
NEW : 38 Special is the 8th act to announce a SeaWorld cancellation . Martina McBride cites `` all the issues that have been aired recently '' in her announcement . Willie Nelson , Trisha Yearwood , Cheap Trick , others already canceled . Online campaign asks acts to ditch SeaWorld after airing of `` Blackfish .