EXHIBIT 2

CUSIP No.  269279402

AGREEMENT CONCERNING JOINT FILING

OF SCHEDULE 13D

The undersigned agree as follows:

(i) each of them is individually eligible to use the Schedule 13D to which this Exhibit is attached, and such Schedule 13D is filed on behalf of each of them; and

(ii) each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other person making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same instrument.

Dated:  June 9, 2017

V. PREM WATSA
/s/ V. Prem Watsa
1109519 ONTARIO LIMITED
By:	/s/ V. Prem Watsa
	Name: V. Prem Watsa
	Title: President
THE SIXTY TWO INVESTMENT COMPANY LIMITED
By:	/s/ V. Prem Watsa
	Name: V. Prem Watsa
	Title: President
810679 ONTARIO LIMITED
By:	/s/ V. Prem Watsa
	Name: V. Prem Watsa
	Title: President

FAIRFAX FINANCIAL HOLDINGS LIMITED
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: President
FFHL GROUP LTD.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Director
FAIRFAX (US) INC.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
ZENITH NATIONAL INSURANCE COMPANY
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

ZENITH INSURANCE COMPANY (U.S. entity)
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
TIG INSURANCE COMPANY
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
ODYSSEY US HOLDINGS INC.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
ODYSSEY RE HOLDINGS CORP.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

ODYSSEY REINSURANCE COMPANY
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
CLEARWATER SELECT INSURANCE COMPANY
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
NEWLINE HOLDINGS UK LIMITED
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
NEWLINE CORPORATE NAME LIMITED
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

CRUM & FORSTER HOLDINGS CORP.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
UNITED STATES FIRE INSURANCE COMPANY
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
NORTHBRIDGE FINANCIAL CORPORATION
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
FEDERATED INSURANCE COMPANY OF CANADA
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

NORTHBRIDGE GENERAL INSURANCE CORPORATION
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
NORTHBRIDGE PERSONAL INSURANCE CORPORATION
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
FAIRFAX (BARBADOS) INTERNATIONAL CORP.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D
TIG INSURANCE (BARBADOS) LIMITED
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

WENTWORTH INSURANCE COMPANY LTD.
By:	/s/ Paul Rivett
	Name: Paul Rivett
	Title: Attorney-in-Fact pursuant to Power of Attorney attached to this Schedule 13D

RIVERSTONE HOLDINGS LIMITED
By:	/s/ Nicholas C. Bently
	Name:	Nicholas C. Bentley
	Title:	Managing Director
RIVERSTONE INSURANCE LIMITED
By:	/s/ Nicholas C. Bently
	Name:	Nicholas C. Bentley
	Title:	Director

ADVENT CAPITAL (HOLDINGS) LTD.
By:	/s/ Neil Murdoch Ewing
	Name:	Neil Murdoch Ewing
	Title:	Company Secretary
ADVENT CAPITAL (NO. 3) LTD
By:	/s/ Neil Murdoch Ewing
	Name:	Neil Murdoch Ewing
	Title:	Company Secretary

ZENITH INSURANCE COMPANY (Canadian entity)
By:	/s/ Lori McDougall
	Name:	Lori McDougall
	Title:	Chief Corporate Development Officer

BRIT LIMITED
By:	/s/ Matthew Wilson
	Name:	Matthew Wilson
	Title:	Group Chief Executive Officer and Director
BRIT SYNDICATES LIMITED
By:	/s/ Matthew Wilson
	Name:	Matthew Wilson
	Title:	Chief Executive Officer and Director

BRIT INSURANCE HOLDINGS LIMITED
By:	/s/ Nigel Meyer
	Name:	Nigel Meyer
	Title:	Director
BRIT INSURANCE (GIBRALTAR) PCC LIMITED
By:	/s/ Nigel Meyer
	Name:	Nigel Meyer
	Title:	Director