TWO EXPERIMENTS WERE CONDUCTED TO EVALUATE A SELF-STUDY PROGRAM PREPARED WITHIN TWO OPERATIONAL FIGHTER-INTERCEPTOR SQUADRONS. BASED ON A TECHNICAL ORDER MANUAL, IT CONSISTED OF SEQUENCED MULTIPLE-CHOICE QUESTIONS WITH A SIMPLE PUNCHBOARD AS A CONFIRMING DEVICE. IN EXPERIMENT ONE, TWO OPERATIONAL SQUADRONS WERE DIVIDED INTO TWO GROUPS JUDGED TO BE AT COMPARABLE LEVELS OF KNOWLEDGE AS BASED ON A PRETEST. DURING THE 11 DAYS OF THE EXPERIMENT, THE EXPERIMENTAL GROUP SPENT JUST OVER FOUR HOURS ON SELF-INSTRUCTION, MOSTLY GOING OVER THE PROGRAM TWICE, WHILE THE CONTROL FOUND ITS CLASSROOM LECTURES INTERRUPTED BY TEMPORARY DUTY AND EXTENDED ALERTS AND SPENT SLIGHTLY MORE THAN ONE HOUR. THE EXPERIMENTAL GROUP DID BETTER ON THE POST-TEST AND LIKED THE PROGRAM AND IT WAS COMPLETELY WITHIN THE CAPABILITIES OF THE SQUADRON TO PREPARE THE MATERIALS. IN THE SECOND EXPERIMENT, THE TIME WAS CONTROLLED. THE EXPERIMENTAL GROUP WENT OVER THE PROGRAM TWICE, SPENDING AN AVERAGE OF 253 MINUTES WHILE THE CONTROL GROUP WAS GIVEN 250 MINUTES OF LECTURE OVER FIVE DAYS. AGAIN THE EXPERIMENTAL GROUP SCORED BETTER ON A POST-TEST, OVER ONE-FOURTH SCORING AS HIGH OR HIGHER THAN THE HIGHEST IN THE CONTROL GROUP. (EB)