On 14 July, the United States Support Mission in Libya evacuated its staff after 13 people were killed in clashes in Tripoli and Benghazi. The fighting, between government forces and rival militia groups, also forced Tripoli International Airport to close. A militia, including members of the Libya Revolutionaries Operations Room (LROR), tried to seize control of the airport from the Zintan militia, which has controlled it since Gaddafi was toppled. Both militias are believed to be on the official payroll. In addition Misrata Airport was closed, due to its dependence on Tripoli International Airport for its operations. Government spokesman, Ahmed Lamine, stated that approximately 90% of the planes stationed at Tripoli International Airport were destroyed or made inoperable in the attack, and that the government may make an appeal for international forces to assist in reestablishing security.