In order to extradite a suspected or convicted criminal from one jurisdiction to another, a rendition aircraft may be used, although the high cost involved means that it is normally used only to transport the most dangerous of prisoners; more commonly, a person being extradited would simply be put onto a commercial airliner, albeit escorted by law enforcement officers. One notable example of a prisoner transported on a commercial airliner was that of Christopher Tappin, a Briton extradited to the United States in February 2012 to face American charges of selling arms parts to Iran. Tappin was flown on United Airlines flights from London Heathrow Airport to El Paso, Texas via Houston accompanied, but not handcuffed, by US Marshals at all times. After arriving in El Paso, Tappin was transported to Otero County jail in New Mexico before his first court hearing in El Paso. Tappin would be subsequently remanded to the UK in September 2013 to serve 14 months at HMP Wandsworth in South London before he was paroled from prison in May 2014 on the condition he wear an ankle monitor for the remainder of his sentence.