I&#x27;m not sure either of us is correct.  It did use a fregat upper stage, but that isn&#x27;t what came down over vietnam.  The fregat took the sat out to gto and wouldn&#x27;t have come down so quickly.<p>Aerospace.org is calling it a &quot;SL-23 Rocket Body&quot;.  I think it was the second stage that actually came down after a few days in the intital&#x2F;parking orbit.  Fregat would be a third stage.<p><a href="http:&#x2F;&#x2F;www.russianspaceweb.com&#x2F;zenit_stage2.html" rel="nofollow">http:&#x2F;&#x2F;www.russianspaceweb.com&#x2F;zenit_stage2.html</a>