This undated photo provided by the Texas Department of Criminal Justice shows John David Battaglia who is scheduled for execution Thursday, Feb. 1, 2018, in Huntsville, Texas, for the May 2001 slayings of his two daughters. This undated photo provided by the Texas Department of Criminal Justice shows John David Battaglia who is scheduled for execution Thursday, Feb. 1, 2018, in Huntsville, Texas, for the May 2001 slayings of his two daughters.