"Thorough, fact-centered investigations corroborate information with individuals who actually have specific knowledge and expertise," Gowdy said. "That means talking to enlisted service members with firsthand information is just as important as talking to the generals and admirals who command them."
On Friday, Gowdy subpoenaed Assistant Secretary of Defense Stephen Hedger to testify about why he did not provide the airman’s name and information to the Benghazi committee.
"John" claims to be a drone operator for the US military who was working on September 11, 2012 when the Benghazi attack happened.
The 2012 attack at the US diplomatic compound in Benghazi on the 11th anniversary of the September 11 terrorist attacks on New York and Washington, DC, killed US Ambassador Christopher Stevens and three other Americans.