Bravo was purposeful so that the AEC could develop medical capabilities for treating those exposed to fallout during nuclear war, and charged that the Marshallese were chosen because of their marginal status in the world at large. According to a U.S. internal transcription of Balos' talk, Balos alleged that "The U.S. chose to make guinea pigs out of our people because they are not white but some brown natives in some remote Pacific islands. Medical treatment that Rongelapese and Utrikese have been receiving is also highly questionable." The AEC issued a staff comment denying these charges. In 1994, a 1953 Castle Bravo program prospectus was found which included reference to Project 4.1 apparently written before the Bravo shot had occurred. The U.S. government responded that someone had gone back into the project list after the Bravo test to insert Project 4.1; thus, according to the U.S. government, the acts were not premeditated. All other U.S. documents point to Project 4.1 having been established after the Bravo test—most sources point to its having been organized on March 7, 1954. The final Project 4.1 report began in its preface with the statement that "Operation CASTLE did not include a biomedical program" (it mentions this in discussing the ad hoc nature by which the project personnel were assembled). All official and mainstream historical accounts of the Bravo test indicate that its high level of fallout was a result of a miscalculation in relation to its design and was not deliberate (see the Castle Bravo article for more information on the alleged accident). Barton C. Hacker, the official historian of U.S. nuclear testing exposures (who is, in the end, very critical of the U.S. handling of the Bravo incident), characterized the controversy in the following way: Controversy continues however, fed by the legacy of mistrust sown by American nuclear testing in the Marshall Islands, which involved relocating hundreds of people and rendering several atolls uninhabitable. While most sources do not think that the exposure was intentional, there is no dispute that the United States did carefully study the exposed Marshallese, but never obtained informed consent from the study subjects. This study of the Marshallese was in some cases beneficial for their treatment, and in other cases not. In these ways, the study of the exposed Marshallese reflects the same ethical lapses as were undertaken in other aspects of the secret human radiation experiments conducted