Likewise, Zambia Airways made two stops per week at RIA on the way to New York-JFK from Lusaka, a service which commenced in April 1988 with a DC-10 and lasted until 1992. In the past, Roberts Airport was listed as an alternative landing site for NASA's Space Shuttle. During the Second Liberian Civil War, the main terminal building suffered major damage, and remains vacant and unenclosed. Currently, the terminal facilities consist of two passenger buildings, one for departures by most commercial carriers and all arrivals, and a second, Terminal B, opened in March 2012, and in its first two years was reserved exclusively for departures by Air France and Delta Air Lines. Other airside buildings are primarily used by the United Nations, with a VIP facility adjacent to the original, unused terminal. After the end of the civil war in 2003, commercial air service was slow to return to Liberia, and only gathered momentum after the inauguration of President Ellen Johnson Sirleaf in January 2006. Royal Air Maroc started flights to Mohamed V International Airport in November 2007, and Virgin Nigeria added Monrovia to its network, from Lagos via Accra twice per week, in October 2008. Also in October 2008 U.S. carrier Delta Air Lines announced that, as part of a major expansion of its route network in Africa, it would begin a once-weekly service between Atlanta and Monrovia, via Sal, Cape Verde. The proposed service would have commenced in June 2009, utilizing a Boeing 757-200 configured for ETOPS operations in a two-class configuration. The news marked the return of an American carrier and direct flights to the United States for the first time since Pan Am's withdrawal, and would make RIA one of only a handful of African airports with service to the US, so was therefore seen as a major step in the recovery of not just the airport, but Liberia itself. The route was revised in May to originate from New York's JFK and connect via Dakar, beginning on 9 June, Monday, and returning every Tuesday. One week prior to the inaugural flight, Delta announced that its planned launch would be suspended indefinitely. It was reported widely that the carrier had been denied permission by the Transportation Security Administration due to a lack of acceptable security standards at Robertsfield. Neither Delta nor the TSA issued any further explanation. However, Cynthia B. Nash, a prominent Atlanta businesswoman, stated in an interview coinciding with her appointment as Liberia's Honorary Consul in August 2009 that she expected Roberts International to upgrade its security to meet TSA standards and for the Delta to launch the flight "within the year."