
There is something you must understand about the Soviet system.  They have the
ability to concentrate all their efforts on a given design, and develop all
components simulateously, but sometimes without proper testing.  Then they end
up with a technological disaster like the Tu-144.  In a technology race at
the time, that aircraft was two months ahead of the Concorde.  Four Tu-144s
were built; two have crashed, and two are in museums.  The Concorde has been
flying safely for over 10 years.
-- Victor Belenko, MiG-25 fighter pilot who defected in 1976
   "Defense Electronics", Vol 20, No. 6, pg. 100
