Harper Construction Co., Inc., San Diego, Calif., is being awarded $28,028,102 for firm-fixed-price task order #0004 under a previously awarded multiple award construction contract (N62473-08-D-8617) for construction of an aircraft maintenance hangar at Marine Corps Air Station Yuma.  The work to be performed provides for construction of a new transient universal hangar facility.  The hangar will support the training and maintenance operations of transient rotary wing aircraft (MV-22) deployed to Marine Corps Air Station Yuma and also be compliant with F-35 Joint Strike Fighter aircraft maintenance requirements including a high bay space, crew and equipment space, administrative space and Special Access Program Facility areas.  The task order also contains a planned modification, which if exercised, would increase the cumulative task order value to $29,181,434.  Work will be performed in Yuma, Ariz., and is expected to be completed by July 2014.  Contract funds will not expire at the end of the current fiscal year.  Six proposals were received for this task order.  The Naval Facilities Engineering Command, Southwest, San Diego, Calif., is the contracting activity.