Death of an American by Islamic State Militants

Abdul-Rahman (Peter) Kassig, an American aid worker, making a food delivery to refugees in Lebanon’s Bekaa Valley, May 2013. (Copyright, with permission to use from Kassig family)

Abdul-Rahman Kassig is shown in a Kassig family photo somewhere along the Syrian border between late 2012 and autumn 2013, helping Special Emergency Response and Assistance (SERA) deliver supplies to refugees.

This undated photo shows Peter Kassig leaning against a truck at an unknown location.

Abdul-Rahman (Peter) Kassig (center) helps push an ambulance up a hill during his time working with SERA. Photo taken near Deir Ezzor, August 2013. (Copyright, with permission to use from Kassig family)

Ed and Paula Kassig, in foreground, pray at a vigil for son Abdul-Rahman Kassig at Butler University in Indianapolis, Indiana, on Oct. 8, 2014.