Conversation so far:
what was snake river canyon in regards to evel knievel ?
The launch took place at the south rim of the Snake River Canyon.
what was the launch of?
Knievel hired subcontractor and aeronautical engineer Doug Malewicki to build him a rocket-powered cycle to jump across the Snake River.
when was the launch?
on Sunday, September 8, 1974, at 3:36 p.m.
MDT.
how many people watched?
so he hired boxing promoter Bob Arum's company, Top Rank Productions, to put the event on closed-circuit television and broadcast to movie theaters.
was the launch successful?
Even though the craft made it all the way across the canyon to the north rim, the prevailing northwest winds caused it to drift back into the canyon.

Question: did he make it?
Self-contained rewrite: did Evel Knievel  make the snake river jump?