Florida Four
The Florida Four were a group of weapon traffickers — Anthony Smyth, Conor Claxton, Martin Mullan and Siobhan Browne — who delivered weapons from the United States to the Republic of Ireland for eventual use in Northern Ireland by the Provisional Irish Republican Army. The operation was first uncovered in 1999 and the group were convicted in 2000 The group was able to send about a 100 handguns, rifles and shotguns, as well as armour-piercing ammunition.