Town Centre as well as Heathrow Airport, use custom built Rockhopper mountain bikes manufactured by Specialized Bicycle Components. LAS employs Fiat Ducatos for use in its non-emergency transport service. The Hazardous Area Response Team vehicles include 4x4 Mercedes-Benz Sprinters, VW Transporters, Volvo XC70s and Polaris All-Terrain Vehicle. Volunteer emergency responders use a mix of Volkswagen Tiguan and Volvo V50. As a part of the Emergency Preparedness, Resilience and Response strategy LAS also has a number of medium and heavy major incident response vehicles such as command vehicles and equipment vehicles on standby at all times around London, based on Mercedes-Benz Sprinters and IVECO trucks. In 2017 140 new Mercedes Sprinter ambulances are to be introduced and 60 new Volkswagen Tiguan to be incorporated into the fast response unit fleet. Notable incidents The LAS plays a significant role whenever an incident causes mass casualties in London. Examples include: Provisional IRA bombing campaign: 1969–1997, a list of these and other bombings in London to which the LAS responded can be found here. Moorgate tube crash: 28 February 1975, the train driver and 42 passengers were killed King's Cross fire: 18 November 1987, 31 people died in a major fire in the Underground station Clapham Junction train crash: 12 December 1988 35 people were killed and 69 seriously injured Marchioness disaster: 20 August 1989, A pleasure boat, Marchioness, was in collision with a dredger; 51 people died Cannon Street rail crash: 8 January 1991, Two people were killed and over 500 injured Southall rail crash: 19 September 1997, an InterCity 125 collided with a freight train on the Great Western Main Line resulting in 7 deaths and 139 injured persons. Paddington train crash: 5 October 1999, Two trains collided a short distance outside of Paddington station, resulting in the deaths of 31 and 523 persons injured 7 July 2005 suicide attacks: Four simultaneous suicide bombings across London resulting in 56 deaths (including 4 assailants) and at least 700 persons injured. Voluntary aid services needed to assist the LAS due to scale of the attacks. 2012 Summer Olympics Croydon tram derailment: 9 November 2016, a tram derailed in south London resulting in 7 deaths and 62 persons injured Westminster attack: 22 March 2017, A vehicular ramming and knife attack resulting in 6 deaths (including the assailant) and 49 persons injured London Bridge Attack: 3 June 2017, A vehicular ramming and knife attack resulting in