Photo attributed to Acroterion. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. No endorsement by licensor implied.
Photo attributed to Staff Sgt. Malcolm McClendon, USARMY. As a work of the U.S. federal government, the image is in the public domain. No endorsement implied.
This image has been released into the public domain because it contains materials that originally came from the United States National Aeronautics and Space Administration (NASA). No endorsement by licensor implied.
Photo attributed to Masahiro Hayata. Incorporated here under the Creative Commons Attribution-Share Alike 2.0 Generic license. No endorsement by licensor implied.
This image is a work of a United States Agency for International Development employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.
