Complex sentence: Criticism of Rather reached a fever pitch after "60 Minutes II" ran his 2004 report about President Bush's military record; numerous critics questioned the authenticity of the documents upon which the report was based.
Split into simpler sentences: Criticism of Rather reached a fever pitch after "60 Minutes II" ran his 2004 report about President Bush's military record. Numerous critics questioned the authenticity of the documents, upon which the report was based.