Acknowledgements

The authors would like to thank the 14 members of the staff of the Johns Hopkins University Applied Physics Laboratory (JHU/APL) for their generous contribution of time while serving as participants for this experiment. The authors would also like to thank Roger Sumey, Edward Lee, David Nesbitt, Stephen Jones, John Ritter, and Mark Swana also of JHU/APL for developing the perspective and plan-view displays and associated computer programs. Finally, thanks to our reviewers for reading that draft version of this report and providing many helpful comments.

Credits

Jim Baumann did most of the background research and organized the report document.

Scott Blanksteen reduced the data, performed the statistical analysis, and produced the graphs and charts.

Mike Dennehy developed the original concept for this experiment, recruited the test participants, and supervised each trial run.

The writing of the final report was a collaborative effort.

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