The correct sentences which are written in the active voice are:
1) The tornado destroyed everything in its path, but the people had enough early warning to get to their underground storm shelters, so there were no casualties.
2) The city officials, including the mayor and city council members, will assess the damages and provide aid to the tornado disaster victims.
A simple method to check if the sentences are in the active voice is making the question; “who performs the action of the main verb”. If the answer is the subject, the sentence is in the active voice. The grammatical structure is: subject+ verb+ object or complement