HUNTSVILLE — A street gang member convicted of fatally shooting an Amarillo couple during a botched beer theft at their grocery store more than a dozen years ago was executed this evening. Ryan Dickson, 30, spoke rapidly when asked if he had anything to say, expressing love to his family and apologizing to the relatives of his victims. No witnesses from his family or the victims' family attended the execution. "I am sorry for what I did, and I take responsibility for what I did," said Dickson, the 13th prisoner to be executed this year in the nation's busiest capital...