In 1956, a new 2,300 m (7,500 ft) runway was constructed, 07R/25L, which almost runs parallel with 07L/25R. The runway is still in use today and saw its length later increased to 3,200 m (10,500 ft). In April 1956, the Belgian government decided to build a new airport, using the same runways, but with the buildings located within the municipality of Zaventem. In April 1957, construction started of the new terminal, preparing the airport for the 1958 World's Fair (Expo 58). The grass runway 12/30 had to make way to allow for the new passenger terminal. This new airport was inaugurated on 5 July 1958, just in time for the 1958 World’s Fair. The buildings on the Melsbroek side are still in use by the Belgian Air Force (15th Air Transport Wing), and this is still known as Melsbroek Airfield. Both Zaventem Airport and Melsbroek Air Base, the military airfield, share the same runways. During the boom of commercial aviation in the 1960s and 1970s, several hangars were constructed. A new cargo terminal was constructed in 1976. In 1994, a brand new terminal was constructed adjacent to the old 1958 building. Two old piers were torn down and replaced by modern ones. In 2002, amidst the turmoil surrounding the demise of the national airline Sabena, a new pier was opened. In 2005, the airport was awarded Best Airport in Europe by Airports Council International / International Air Transport Association (ACI/IATA), based on a survey of over 100,000 passengers worldwide. Brussels Airport continued to appear in top airports lists as of 2012. A direct train link with Leuven and Liège was opened on 12 December 2005. In 2007, the airport served 17.8 million passengers, an increase of 7% over 2006. The cargo volume in the same year amounted to 780,000 tonnes, an increase of 8.9% over 2006. In 2008, the airport served 18.5 million passengers, which was an increase of 3.7% over the previous year. Sabena's demise meant a sharp fall in passenger traffic, a blow from which the airport only slowly recovered. The airport's future is threatened by disagreement between the governments of Flanders and the Brussels Capital Region concerning night-time air traffic routes. In March 2009, the old mechanical Flight information display systems were replaced by electronic ones. In September 2009, CEO Wilfried Van Assche resigned. One of the (unofficial) reasons was the delay in the construction of the low-cost terminal and the possible lawsuit by 52 airlines active at Brussels Airport, on the grounds of tax discrimination. It was Van Assche who started expanding the Long-Haul network (Jet Airways, Hainan Airlines, Etihad Airways and US Airways) at Brussels Airport. In February 2010 Arnaud Feist was appointed CEO. The Chairman of the Board is Marc Descheemaecker. On 18 February 2013, in the 2013 Belgium diamond heist, eight men armed with automatic weapons and dressed in police uniforms seized 120 small parcels containing an estimated US$50 million worth of diamonds from a Helvetic Airways Fokker 100 passenger plane loaded with passengers preparing for departure to Zürich. The men drove two vehicles through a hole they had cut in the airport perimeter fence to Flight LX789, which had just been loaded with diamonds from a Brink's armored van from Antwerp. They carried out the operation within five minutes with no injuries and without firing a shot. On 22 March 2016, two explosions took place in Brussels Airport at 07:58 local time. One occurred near the American Airlines and Brussels Airlines check-in desks and the other next to a Starbucks coffee shop. A third bomb was found in the airport and detonated in a controlled explosion. The airport was closed after the attacks until 3 April, when it reopened with temporary facilities at less than 20% of its previous passenger capacity. Flights bound to Brussels Airport were either cancelled or diverted to nearby airports such as Brussels South Charleroi Airport, Ostend–Bruges International Airport, and Schiphol.