. rental expense included in other operations and maintenance expense was $ 84 million , $ 75 million and $ 107 million for 2002 , 2001 , and 2000 , respectively . as of december 31 , 2002 , dominion , through certain sub- sidiaries , has entered into agreements with special purpose enti- ties ( lessors ) in order to finance and lease several new power generation projects , as well as its corporate headquarters and air- craft