Since 2012, the people mover "The Squaire Metro" connects The Squaire with the nine-storey parking structure. On a length of about 300 metres the so-called MiniMetro system with its two cabins can carry up to 1,300 passengers per hour. The constructor of the system was the Italian manufacturer Leitner Ropeways. In 2012, the website Airport Watch reported weekly protests had been occurring at the airport since the opening of a fourth runway a year previously. The new runway officially went into operation on 20 October 2011, with an aircraft carrying Chancellor Angela Merkel, performing the first landing on 21 October. The centre line separation from the existing north runway is about 1,400 m (4,593 ft). This allows simultaneous instrument landing system (ILS) operations on these two runways, which has not been possible on the other parallel runways, which do not meet the 3,500 feet (1,100 m) minimum separation for ILS operations. This allowed the airport to increase its capacity from 83 to 126 aircraft movements per hour. On 11 October 2011, the Hessian Administration Court ruled that night flights between 11pm and 5am (the so-called Mediationsnacht) are no longer allowed at Frankfurt Airport after the inauguration of the new runway, and therefore overrode the approval from the Hessian government from 2007 which allowed 17 scheduled flights per night. On 4 April 2012, the German Administrative Court confirmed the decision of the Hessian Administration Court, banning night flights between 11pm and 5am. To handle the predicted passenger amount of about 90 million in 2020, a new terminal section adjacent to Terminal 1 for an additional six million passengers opened on 10 October 2012. It is called Flugsteig A-Plus and is exclusively used by Lufthansa mainly for their long-haul flights. Flugsteig A-Plus features eight parking positions that are able to handle four Airbus A380s or seven Boeing 747-8/747–400 simultaneously. In November 2016, Ryanair announced the opening of a new base at Frankfurt Airport with four routes to Spain and Portugal. This move by Ryanair was heavily blasted, especially by Lufthansa, as Ryanair was granted high discounts and incentives regarding the airport's fees. Albanian citizen, Arid Uka, a 21 year old at the time, targeted a United States Air Force bus parked outside the terminal building that was supposed to transport fifteen U.S. airmen to Ramstein Air Base. He reportedly walked up to a waiting airman, asked him for a cigarette, and wanted to know whether the airmen were bound for Afghanistan. When the airman said yes, according to German prosecutor Rainer Griesbaum, Uka waited for the airman to turn away and then shot him in the back of the head, killing him. Shouting "Allahu Akbar!" the attacker then entered the bus, shooting and killing the driver, and continued to fire three shots at two other airmen, wounding them. When he pointed his pistol at the head of another airman and pulled the trigger, the weapon jammed. Uka fled, but was pursued by the civilian airport employee Lamar Joseph Conner and Staff Sergeant Trevor Donald Brewer and shortly afterwards overpowered by two German police officers. He was subsequently arrested. Portions of the airport were closed in early 2020 due to the COVID-19 pandemic. The Northwest Runway and Runway 18 West were closed on 23 March and re-purposed for parking unused aircraft. Terminal 2 was also closed, and all passenger operations were concentrated in Terminal 1. The Northwest Runway re-opened in July to handle summer tourist demand, while Runway 18 West remained closed. With almost no passenger traffic in the spring months, Frankfurt's total passenger volume in 2020 fell to 18.8 million, the lowest figure recorded since 1984.