In this May 2004 photo, a group gathers around a GBU-43B, or massive ordnance air blast (MOAB) weapon, on display at the Air Force Armament Museum on Eglin Air Force Base near Valparaiso, Fla. U.S. forces in Afghanistan struck an Islamic State tunnel complex in eastern Afghanistan on Thursday, April 13, 2017, with a GBU-43B, the largest non-nuclear weapon ever used in combat by the U.S. military, Pentagon officials said. (Photo by Mark Kulaw/Northwest Florida Daily News via AP Photo)
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