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.
One of the Lego Group's most successful series, the Lego train system, was released in 1966. The original train sets included a 4.5-volt motor, battery box and rails; two years later, a 12-volt motor was introduced. On 7 June 1968, the first Legoland Park was opened in Billund. This theme park featured elaborate models of miniature towns built entirely from Lego bricks. The three acre (12,000 mÂ²) park attracted 625,000 visitors in its first year alone.