General Mattis and Arab culture

"Mattis called in experts in Arab culture to lead cultural sensitivity classes. As Thomas E. Ricks recounts in Fiasco, Marines were taught to remove their sunglasses when talking to Iraqis, and when searching a home, to respect the head of the household by seeking his permission to enter rather than roughing him up." Who were those experts in Arab culture, I wonder? John Bolton and Fouad Ajami?