AGREEMENT TO FILE SCHEDULE 13D JOINTLY (as required by Item 7 of Schedule 13D)Berkshire Hathaway Inc • August 11th, 2017 • Fire, marine & casualty insurance
The undersigned persons hereby agree that reports on Schedule 13D, and any amendments thereto, may be filed in a single statement on behalf of all such persons, and further, each such person designates Warren E. Buffett as its agent and attorney-in-fact for the purpose of executing any and all such reports required to be made by it with the Securities and Exchange Commission.
