Security spending by 2014 World Cup host Brazil is reported to reach almost $900 million, five times the budget of the 2010 tournament. Brazilian authorities say the biggest risks are theft and disruption due to labor unrest. Previous host nation South Africa focused on cyber threats. There is a trend of increasing security in mega-event host cities such as Sochi and London. Security measures in Brazil include around 150,000 personnel, U.S. military bomb-disposal robots, Israeli drones, a British mobile scanner that can detect a 3-D printed pistol, and Chinese-built X-Ray systems.