NY officials urge calm after doctor's Ebola diagnosis
Officials say Craig Spencer closely followed all protocols after returning from West Africa; his fever wasn't nearly as high as first reported
Canada attack raises "lone wolf" worries in U.S.
FBI keeping a close eye on a group of people considered a possible risk to the homeland, worried Ottawa shooter might inspire copycats
American ISIS hostage's family get unlikely ally
Senior member of an al Qaeda affiliate has sparked debate among jihadists, giving American captive's parents new hope