The Sikorsky R-4 is an experimental helicopter produced by the United States company Sikorsky. Only one of these helicopters was ever sent to Burma, and was used by the Royal Air Force. The Sikorsky only appeared in Medal of Honor: Rising Sun.

Medal of Honor: Rising Sun Edit

Bromley uses this helicopter to rescue Joseph Griffin, Ichiro Tanaka and Raj from the burning temple in the mission "In Search of Yamashita's Gold".