what we can do reporter: the sheriff gave incorrect information what time he arrived at the school and what he communicated to other law enforcement leaders. he did not appear at this meeting and has not responded to cnn s request for comment. speaking in november, he said he thought his response was adequate. can we just reporter: making a rare appearance, the uvalde district attorney. your response? reporter: blocking records or videos from being released while her investigation into the failure is ongoing. what are you waiting for, ma am? reporter: reasoning is wearing thin on the victims families and the uvalde mayor who sued the d.a. last month asking the judge to release the information to the city. she said her investigation could take years answers continues to refuse to answer cnn s questions.