Question: The American podcaster, author, martial artist and retired United States Navy SEAL Jocko Willink worked with this United States Navy SEAL veteran and sniper born in 1974 served how many tours in Iraq?
Sentence (from "Jocko Willink"): John "Jocko" Willink (September 8, 1971) is an American podcaster, author, martial artist and retired United States Navy SEAL.
Relevant evidence: Yes