DRS 2500 SCMH FOR SCHEDULE 1, INST SUPERV TEST AND, COMM 2500 SCMH DRS SCHEDULE 1, DRS 1500 SCMH FOR, SCHEDULE 2, INST SUPERV TEST AND COMM 1500 SCMH, DRS SCHEDULE 2, DRS 5000 SCMH FOR SCHEDULE 3, INST, SUPERV TEST AND COMM 5000 SCMH DRS SCHEDULE 3, DRS 500 SCMH FOR SCHEDULE 4, COMM 500 SCMH DRS SCHEDULE 4, DCU 450 SCMH FOR, SCHEDULE 5, EREC COMM TEST OF 450 SCMH DCU, ASSISTANCE IN SKID 450 SCMH DCU, DCU 1000 SCMH FOR SCHEDULE 6, EREC, COMM TEST OF 1000 SCMH DCU SCHEDULE 6, ASSISTANCE, IN SKID 1000 SCMH DCU SCHEDULE 6