Article Photos: UPDATED Video: Blake Shelton and Miranda Lambert to perform "Over You" in honor of Oklahoma on "The Voice" tonight; Swon Brothers contending on tonight's show 406/519

Brad Avey clears fallen trees from his property, 2700 Old Farm Rd., after a tornado moved through Edmond, Okla., Sunday, May 19, 2013. Photo by Nate Billings, The Oklahoman