An Israeli airstrike killed Islam and Mohammed Yasin, two figures in the Army of Islam who are believed responsible for kidnapping BBC journalist Alan Johnston in 2007. According to the IDF, the two planned to kidnap Israelis in the Sinai.
Perhaps this will give some sense of closure to Johnston, who was held captive for four months.
The Army of Islam's also implicated in the kidnapping of Gilad Shalit, 1,606 days ago. Unfortunately, no closure there to speak of.