Executive Retirement/Retention Awards granted to the Executive shall be payable to the Executive according to the terms of the Plan and the additional terms of this Section 3.1.  Unless otherwise provided in this section, the Executive shall become 50% vested in his Executive Retirement/Retention Award balance on the date he becomes Chief Executive Officer of the Company, and fully vested in the remaining 50% of his Executive Retirement/Retention Award balance upon his 65 th birthday, in each case provided he remains in continuous Service through such date.