Final answer:
The Ewing Report under Harry Truman was a report on national defense strategies.
Step-by-step explanation:
The Ewing Report under Harry Truman was a report on national defense strategies. During the Truman administration, there was a significant focus on national security and containing communism, especially during the Cold War.
The Ewing Report outlined the defense strategies and policies that were necessary to address these challenges and protect the interests of the United States.