wrote:

Andrew Chaplin wrote:
Paul J. Adam wrote:
Peter Stickney wrote:

There are only 3 countries which have built and
flown Supersonic Heavy Interceptors. The U.S.,
the Soviet Union, and Canada. That's danged good.

What about the Tornado F.3?

And the English Electric Lightnings?

I could be wrong, but it appears to me that Peter was referring to
the YF-12A, MiG-25, and Canada's White Elephant (Arrow).

Probably. However, I suspect that the EE programme was nearly as
challenging as Avro Canada's.

For those interested in Arrow-analia, one of the surviving pieces of
the Arrow programme is a cutaway of the Velvet Glove missile which,
when I last checked, was in use as a training aid at the School of
Artillery.
--
Andrew Chaplin
SIT MIHI GLADIUS SICUT SANCTO MARTINO
(If you're going to e-mail me, you'll have to get "yourfinger." out.)