Gingrich began taking commercial flights and recruited professional volunteers to save money.
First published in 1988, it was the result of a three-year nationwide program involving over 400 amateur and professional volunteers.
About half of these are professional and the other half volunteers.
Is it possible to become a professional volunteer?
On the next page, we'll take a look at some of the logistics of being a professional volunteer.
The country plans to convert the current conscript-based military into a professional volunteer military not later than in 2011.
Since 1 March 1995 the Belgian armed forces consist of professional volunteers only.
With the help of professional volunteers, the youth spent almost six months rebuilding.
Personal assistance is provided by many professional adult volunteers and parents.
The army reverted to an all professional volunteer service, which it remains to this day.