Prospectus excerpt:  We are selling 4,000,000 of our 8.25% Series A Cumulative Redeemable Perpetual Preferred Shares, which we refer to in this prospectus supplement as the Series A Preferred Shares. The Series A Preferred Shares will not be redeemable before April 20, 2017, except under circumstances intended to preserve our status as a real estate investment trust, or REIT, for federal and/or state income tax purposes and except as described below upon the occurrence of a Change of Control (as defined in this prospectus supplement). On and after April 20, 2017, we may, at our option, redeem any or all of the Series A Preferred Shares for cash at $25.00 per share plus, subject to exceptions, any accrued and unpaid dividends to but excluding the date fixed for redemption. In addition, upon the occurrence of a Change of Control, we may, at our option, redeem any or all of the Series A Preferred Shares for cash within 120 days after the first date on which such Change of Control occurred at $25.00 per share plus, subject to certain exceptions, any accrued and unpaid dividends to but excluding the date fixed for redemption. The Series A Preferred Shares have no stated maturity, are not subject to any sinking fund or mandatory redemption and will remain outstanding indefinitely unless we redeem or otherwise repurchase them or they become convertible and are converted as described in this prospectus supplement.