Original sentence: In April 2005 the $350 million Imam Khomeini International Airport was reopened under the management of a consortium of four local airlines—Mahan Air, Aseman, Caspian Air and Kish Air—although no formal contract appeared to have been awarded
Edited sentence: In April 2005 the $350 million Imam Khomeini International Airport was reopened under the management of a consortium of four local airlines—Mahan Air, Aseman, Caspian Airlines and Kish Air—although no formal contract appeared to have been awarded