A recent report on the advisability of converting the Army's tactical truck fleet to hybrid electric vehicles found that while the technology is feasible, it remains too expensive and too risky to warrant any action other than further study. The report, dated June 29, was sent by Army acquisition executive Malcolm O'Neill to Sen. Carl Levin (D-MI), chairman of the Senate Armed Services Committee, and was compiled at the request of the House Armed Services Committee in its fiscal year...