I'm new to the NG storage biz and would appreciate some help on PNG's biz model. According to their latest presentation, ~90% of their 2012 capacity is fee-based (contracts to third parties), and they expect to get to ~85% in the subsequent years. If that's the case, only a small percentage of their capacity is subject to low NG price spread and volatility; why then is low natural gas pricing an important factor for the business? Their revenue should be fairly stable, right? What am I missing? Thanks for any elucidation.