The other forces also rejected the idea of experimental black units. General Spaatz once again declared that the mission of the Army Air Forces was already seriously hampered by budgetary and manpower limitations and experimentation would only sacrifice time, money, manpower, and training urgently needed by the Army Air Forces to fulfill its primary mission. He believed, moreover, that such an experiment would be weighted in favor of Negroes since comparisons would be drawn between specially selected and trained black units and average white units.[7-81] In a similar vein the Director of Organization and Training, General Hall, found the conversion "undesirable at this time." He also concluded that the problem was not limited to training difficulties but involved a "combination of factors" and could be solved through the application of common sense by the local commander.[7-82] The Chiefs of Ordnance and the Chemical Corps, the technical services involved in the proposed experiment, concurred in the plan but added that they had no Negroes available for the designated units.[7-83] [Footnote 7-81: DF, CG, AAF, to D/P&A, 27 Nov 45, sub: Utilization of Negro Military Personnel, WDGPA 291.2 (16 Nov 46).] [Footnote 7-82: Memo, D/O&T for D/P&A, 4 Dec 46, sub: Utilization of Negro Military Personnel, WDGOT 291.2 (16 Nov 46).] [Footnote 7-83: Tabs E and F to DF, D/P&A to DCofS, 10 Jan 47, sub: Utilization of Negro Military Personnel in Overhead Installations, WDGPA 291.2 (12 Jul 46).]