Exhibit 3.550

Business ID: 878125
Date Filed: 09/19/2005 12:00 PM
Eric Clark
Secretary of State

[ILLEGIBLE]

F0100 - Page 1 of 2

OFFICE OF THE MISSISSIPPI SECRETARY OF STATE
P.O. BOX 136, JACKSON, MS 39205-0136    (601) 359-1333
Certificate of Formation

	The undersigned, pursuant to Senate Bill No. 2395, Chapter 402, Laws of 1994, hereby executes the following document and sets forth:
	1. Name of the Limited Liability Company
Þ	Hancock County Development Company, LLC
	2. The future effective date is:                     upon filing      (Complete if applicable)
	3. Federal Tax ID
Þ	Applied for
	4. Name and Street Address of the Registered Agent and Registered Office is
Þ	Name:	CT Corporation System
Þ	Physical Address:	c/o CT Corporation System, 645 Lakeland East Drive, Suite 101
Þ	P.O. Box
Þ	City, State, ZIPS, ZIP4    Flowood                     MS          39232     –
	5. If the Limited Liability Company is to have a specific date of dissolution, the latest date upon which the Limited Liability Company is to dissolve
Þ
	6. Is full or partial management of the Limited Liability Company vested in a manager or managers? (Mark appropriate box)
Þ	o Yes                    þ No
	7. Other matters the managers or members elect to include
Þ
Þ

F0100 - Page 2 of 2

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  OFFICE OF THE MISSISSIPPI SECRETARY OF STATE
P.O. BOX 136, JACKSON, MS 39205-0136    (601) 359-1333
Certificate of Formation

	By:	Signature		(Please keep writing within blocks)
		Printed Name:	Jo Lynn White	Title:	Authorized Agent
	Street and Mailing Address
Þ	Physical Address:	15880 N. Greenway-Hayden Loop, Suite 100
Þ	P.O. Box
Þ	City, State, ZIPS, ZIP4		Scottsdale	AZ	85260                –
	By:	Signature		(Please keep writing within blocks)
		Printed Name		Title
	Street and Mailing Address
Þ	Physical Address
Þ	P.O. Box
Þ	City, State, ZIP5, ZIP4				–