2017 TOP 49ERS Elements of Enterprise

Subsidiaries: Rex Electric & Technologies; Heide b Cook; All American Oilfield; Chugach Alaska Services; Chugach Tuullek; Chugach Professional Oilfield Services; Chugach Commercial Holdings; Chugach Government Solutions; Chugach Investment Holdings; Chugach Government Services; Wolf Creek Federal Services; Chugach Management Services; Chugach Consolidated Solutions; Chugach Industries; Chugach World Services; Chugach Information Technology; Defense Base Services; Chugach Federal Solutions; Chugach Education Services; Chugach Technical Solutions; Chugach Training & Educational Solutions; Chugach Systems Integration Calista Corporation Andrew Guy, President/CEO 5015 Business Park Blvd., Suite 3000 Anchorage, AK 99503 Phone: 907-275-2800 Fax: 907-275-2919 calista@calistacorp.com calistacorp.com Year Established: 1972 Main Business: Calista Corporation is the parent company of more than 35 subsidiaries in the following industries: military defense contracting, construction, marketing and advertising services, communications, real estate, environmental and natural resource development ancMnformation technology services. Subsidiaries: Inuit Services Inc.; Bering Straits Aerospace Services LLC; Bering Straits Logistics Services LLC; Bering Straits Information Technology LLC; Bering Straits Technical Services LLC; Bering Straits Aki LLC; Eagle Eye Electric LLC; Ayak LLC; Global Support Services LLC; Global Management Services LLC; lyabak Construction LLC; Global Asset Technologies LLC; Global Precision Systems LLC; Bering Straits Development Co.; Global Technical Services LLC; Golden Glacier, Inc.; 4600 Debarr LLC; Alaska Industrial Hardware; Paragon Professional Services, LLC; Arcticom, LLC; Alaska Gold Company LLC; Aurora Inn b Suites; Stampede Vehicle Rentals Doyon, Limited Aaron Schutt, President/CEO 1 Doyon PI., Suite 300 Fairbanks, AK 99701-2941 Phone: 907-459-2000 Fax: 907-459-2060 info@doyon.com doyon.com Year Established: 1972 Main Business: Doyon Drilling-Oil b Gas Drilling; Doyon Associated-Construction; Doyon Anvil-Engineering; Doyon Remote Facilities & Services-Camps and Camp Services. Subsidiaries: Doyon Oil Field Services, Inc.; Doyon Government Contracting, Inc.; Doyon Natural Resources Development Corporation; Northern Laundry Services; Doyon Tourism; Northstar Manager, LLC Cook Inlet Region, Inc. Sophie Minich, President/CEO PO Box 93330 Anchorage, AK 99509-3330 Phone: 907-274-8638 Fax: 907-263-5183 info@ciri.com ciri.com Year Established: 1972 M