Continuing the Thread drift:
The Police motorcycle shown is indeed a Triumph
Thunderbird which was, IIRC, a 650cc engine with a single carburettor.
A slightly later version had a twin carby engine which was the T120 and later (?) called the Bonneville.
A few too many years have passed since!
I nearly bought the 750cc version of the Bonneville back around '73, but opted for a TX650 Yamaha instead!
Clinton; Love those photos!
Btw, what eventually happened to Flt Lt Cooper?