Comtech Telecom promotes Daniel Gizinski to president-satellite and space communications segment ... Digital infrastructure investment firm DigitalBridge appoints Yoshiaki Fujimori, ex-Oracle, as senior executive adviser, Japan and Asia-Pacific region ... Fiber provider Light Source Communications hires Joe Patton, ex-Sifi Networks, as chief revenue officer, and Dan Enright, previously GW Communications, as COO ... GeoLinks appoints Kevin Hetrick, ex-Strategic Venue Partners, as CEO ... Kathryn Ford, previously Armstrong Teasdale, joins digital network services provider Congruex as general counsel ... ISP software provider Airties appoints John Lancaster-Lennox, ex-Nokia, as executive vice president-general manager-Asia.