Kevin Vickers, hailed as a hero for helping to end the 2014 attack on Parliament Hill, is making a leap to politics. The former House of Commons sergeant-at-arms announced Friday in Newcastle, N.B., that he is seeking the Liberal leadership in New Brunswick. Vickers, who retired this month as Canada's ambassador to Ireland, is hoping to replace former premier Brian Gallant who lost power last fall after the Liberals failed to form a minority government in the weeks following the Sept. 24 provincial election.