sentences:  Gregg when explaining his family background, revealed that his father, regarded as a quiet man, had trust in the Royal Ulster Constabulary (RUC) and British Army but joined the loyalist vigilante groups set up around the start of the Troubles ostensibly to protect the Protestant community from attacks by republicans.His own earliest memory of the Troubles was the Northern Ireland Civil Rights Association marches in Derry, a movement to which Gregg and his family were strongly opposed.Gregg joined the Ulster Young Militants (UYM), the youth wing of the loyalist paramilitary Ulster Defence Association (UDA) at the age of 14.