Iraqi Army Brig. Gen. Kalaf Mohammad Frak (right) and US Air Force Lt. Col. Scott Curtin after an Mi-17 helicopter exercise at Besmaya Combat Training Center, Oct. 27, 2010. (Photo: Sgt. Chad Menegay)
A photo posted on social media purports to show family members grieving those killed by Islamic State militants south of the Iraqi city of Tikrit on Friday morning. (Photo: Social Media)