Question: H.A.M.M.E.R. is a fictional espionage and law enforcement agency appearing in American comic books published by Marvel Comics and was formed in "Secret Invasion" #8 to replace S.H.I.E.L.D., created by what two men? 
Sentence (from "H.A.M.M.E.R."): The organization is led by Norman Osborn and was formed in "Secret Invasion" #8 to replace S.H.I.E.L.D. The organization plays a large part in Marvel's "Dark Reign" and "Siege" storylines that ran from 2008 - 2010.
Relevant evidence: Yes