David Cullen has been associated with Navigational Facilities and Flight Inspection since 1966. In 1965 he joined the United States Air Force and spent eight years in maintaining navigational facilities in the Far East as well as at Air Force bases in the United States. During this time he maintained all navigational facilities in the USAF inventory. He also spent one year as an Air Force detachment chief for a LORAN site in Korea.

In 1973 he became involved in flight inspection and the next decade was spent in the flight inspection arena with assignments in the United States as well as an assignment to the flight inspection unit at Yokota, Japan. He spent a total of 14 years in flight inspection, starting as a system operator and ending as the AFCC headquarters standardization evaluation operator. He retired from the USAF with the rank of Chief Master Sergeant.

David has attended the USAF electronic school for navigational aids as well as other appropriate USAF schools and courses. He has also completed FAA flight inspection training courses.

Since 1987 he has been in the flight inspection marketing field while working with Sierra Technologies, Sierra Data Systems and Aerodata.

David is currently the president of dc Global Associates located in Buffalo, New York.