The principal, interest, and income from the national guard training area and facility development trust fund must be used by the adjutant general solely for training area acquisition and facility development; provided, that the principal, and any interest and income which the fund accrues from July 1, 1985, through June 30, 1989, must be used solely for the acquisition of land for national guard training purposes and the expenditure, in conjunction with federal matching funds, for the construction of a new national guard armory on or adjacent to the military reservation known as Fraine Barracks.