The Department of Defense has long played a major role in humanitarian assistance/disaster response (HA/DR) operations due to its unique capabilities, manpower, and forward-deployed resources. The Asia-Pacific region is of particular importance because it bears the brunt of the majority of the world's natural disasters and is home to key U.S. allies. In an effort to improve the effectiveness of such operations, this report analyzes recent HA/DR operations in Burma, Indonesia, Pakistan, and Japan, and identifies lessons that can be applied in the future.