At the end of November 2008, the V1 version of the Sirina™ mission preparation ground station was delivered to the Swiss Army. The system was developed by Eurocopter for the Swiss Army’s EC635/EC135 helicopters. Following a successful qualification by armasuisse, the Swiss Army has now been using the Sirina™ mission preparation system for the EC635/ EC135 since January 2009. The Swiss Army was one of Eurocopter’s initial customers for this type of system, which was first delivered in 2000. Ever since, the Swiss Army has regularly ordered new Sirina™ systems or updates to cover the specific features of its new aircraft and changing operational requirements. The V2 version will be delivered to the Swiss Army in March 2009 and will cover its entire helicopter fleet, including the Cougar.