For more than 20 years, I worked in the Greek Military Air Force as Civil Engineer. The main responsibility was maintenance and construction of all the infrastructure and installations at the Air Bases of the Greek Air Force. That was including runways, taxiways, aprons, hangars, warehouses, labs, all types of buildings (offices, housing, educational, cookhouses etc.), road network, perimeter fence and all types of vital infrastructure networks (potable water, waste water, fuel pipeline, electrical supply etc.).After retirement, from 2012 until present, I work as Consultant Engineer in private companies for Supervision of Public Works. Areas of expertise: Construction Supervision, Contract Managing, Resident Engineer, mainly but not limited to Hydraulic Projects (irrigation, sewerage or water networks, dams etc.)