David Daniel Lowman (1921-1999) was a National Security Agency employee, an expert witness in the case that overturned Hirabayashi v. United States, and the author of the posthumously published book MAGIC: The Untold Story of U.S. Intelligence and the Evacuation of Japanese Residents from the West Coast during World War II.
Biography
Lowman was a career officer in the National Security Agency. In the 1970s Lowman worked on the declassification of World War II Japanese cable traffic decrypted by the Magic program. Based on his reading of those cables, he criticized the Commission on Wartime Relocation and Internment of Civilians for its conclusion that there had been "no military necessity" in relocating Japanese-Americans into internment camps. The court decided in favor of Hirabayashi. Lowman died in April 1999.
Posthumous book
Lowman's book MAGIC: The Untold Story of U.S. Intelligence and the Evacuation of Japanese Residents from the West Coast during World War II was published posthumously in 2001. Magic argued that the internment of Japanese Americans was justified based on intercepted communications that indicated a spy network operating on the American West Coast.
The book was published by Lee Allen, a retired Army lieutenant colonel and activist who convinced the Smithsonian Institution to revise downward its estimates of medals and honors awarded to Japanese-American soldiers in World War II. Allen also wrote the book's foreword, in which he claimed that for Japanese-Americans during World War II, "evacuation and life under government care provided much needed relief from trials and threats they faced on the West Coast".
Writing for Military Review, Richard Milligan concluded that Magic "refutes the accepted history that the evacuation was solely the result of national leaders' 'racism, war hysteria and the lack of political will'".