The basic textbook employed by the Defense Institute of Security Cooperation Studies (DISCS - formerly DISAM) for instruction of all classes covering the full range of security cooperation activities. The text is revised annually and commonly referred to as the Green Book as it is bound in a green cover.
7938 Passenger Train is a City Trains set released in June 2010. It was sold in the US as a Special Edition set at the LEGO Store and Toys R Us.
The Town Hall is the most expensive set piece in a collection of Lego sets that can be combined together to make an entire city. Other parts of the city include a pet shop, a bike shop, a police station, a post office, and so on.