ECCLES, ENGLAND - OCTOBER 05:  Barbara Henning (L), wife of murdered aid volunteer Alan Henning sits with family members as they attend a 'service of reflection' to honour his life at Eccles Parish Church on October 5, 2014 in Salford, England. A video purporting to show the beheading of British hostage Alan Henning has been released by Islamic State militants. Aid worker Alan Henning had been held by Islamic State since December 26th 2013 and was taken by militants as he arrived in Syria to help victims of the civil war.  (Photo by Christopher Furlong/Getty Images)