WASHINGTON (Reuters) – The U.S. Air Force on Thursday named 12 companies that are eligible to receive orders under a contract valued at up to $5.8 billion for computer network operations and infrastructure. The companies are Centech Group Inc, Epsilon Systems Solutions Inc, Smartronix Inc, SMS Data Products Group Inc, Indus Corp, Technica Corp, Telos Corp, Sumaria Systems Inc, BTAS Inc, American Systems Corp, STG, Inc, and MicroTechnologies LLC. …