The West Indies island in the Caribbean was filmed on Catalina Island, which is off the coast of California.
The 6 ribbons worn by Chief Constable McPhee are: World War II Victory, American Defense Ribbon, World War II Occupation, Vietnam Service, Armed Forces Expeditionary, Korean Service. They are not in the correct order.
The N-number of the plane was partially obscured, but is N14CS which is a 1944 Grumman G-21A Goose serial number 1048.
Thalmus Rasulala and Ta-Tanisha both appeared in What's Happening.