BEIRUT (AP) — Islamic State group fighters seized at least one cache of weapons airdropped by U.S.-led coalition forces that were meant to supply Kurdish militiamen battling the extremist group in a border town, activists said Tuesday. The cache of weapons included hand grenades, ammunition and rocket-propelled grenade launchers, according to a video uploaded by a media group loyal to the Islamic State group. The video appeared authentic and corresponded to The Associated Press' reporting of the event.