Andrew J. Guy

Calista Corp. operates as a construction engineering company. Its services include rural camps, heavy equipment sales, rental and service, both rural and urban construction including heavy civil and arctic construction, environmental remediation and range reclamation, ocean and shallow-draft river marine transportation, real estate investments, telecommunications, cyber security and cloud technology, public relations and marketing, and website development. The company was founded in 1972 and is headquartered in Anchorage, AK.

Yulista Management Services, Inc. provides professional and technical services to government agencies, communities, and businesses. It offers aviation prototype integration and modification, ground vehicle modification, metrology services and QA and QC and testing services. The firm also provides design, fabrication; manufacturing, purchasing, logistics and program management services. The company was founded in 1982 and is headquartered in Anchorage, AL.