Defence Secretary Visits A Trident Nuclear Submarine

RHU, SCOTLAND - JANUARY 21: Defence Secretary Michael Fallon (centre) with Daniel Martyn (left) Commanding Officer of HMS Vigilant and Rear Admiral of Submarines and Assistant Chief of Naval Staff John Weale (right) during a visit to Vanguard-class submarine HMS Vigilant, one of the UK's four nuclear warhead-carrying submarines, at HM Naval Base Clyde, also known as Faslane, on January 21, 2016 in Rhu, Scotland. HMS Vigilant is one of the UK's fleet of four Vanguard class nuclear-powered ballistic missile submarines carrying the Trident nuclear missile system. A decision on when to hold a key Westminster vote on renewing Trident submarine class is yet to be decided senior Whitehall sources have admitted. (Photo by Danny Lawson/WPA Pool/Getty Images) RHU, SCOTLAND - JANUARY 21: Defence Secretary Michael Fallon, in the weapons storage compartment onboard HMS Vigilant at Her Majesty's Naval Base, Clyde on January 21, 2016 in Rhu, Scotland. HMS Vigilant is one of the UK's fleet of four Vanguard class nuclear-powered ballistic missile submarines carrying the Trident nuclear missile system. A decision on when to hold a key Westminster vote on renewing Trident submarine class is yet to be decided senior Whitehall sources have admitted. (Photo by Jeff J Mitchell/Getty Images)