SPECIAL POWER OF ATTORNEY THIS SPECIAL POWER OF ATTORNEY (this "POA") is executed by Douglas M. Leone ("Leone") as of February 9, 2017. 1. Leone hereby appoints each of Chris Cooper, Marie Klemchuk and Jung Yeon Son (each acting independently and without any requirement of joint action) as Leone's attorney-in-fact to execute and deliver, in Leone's name and on his behalf, any form, instrument, agreement or other document reasonably expected to be delivered to, or filed with, the U.S. Securities and Exchange Commission, but only to the extent that, in each case, Leone has confirmed his approval of such form, instrument, agreement or other document in writing. 2. This POA shall shall not expire, but shall be revocable on a prospective basis, in whole or in part, upon notice by Leone to the applicable attorney(ies)-in-fact. Executed by Leone as of the date first above written: /s/ Douglas M. Leone Douglas M. Leone