To reduce the risk of a negative referendum outcome the Swiss defence ministry revised its procurement strategy. With its Air 2030 programme The Swiss government now opted for a planning order for a combined purchase of new fighters together with long-range groundbased air defences (GBAD). This programme valued at CHF8 billion ($8.1 billion), the biggest arms procurement programme in modern Swiss history. Defence minister Viola Amherd unveiled results of studies tackling the defence procurement package: fighters replacing both the current F-5 Tigers and F/A-18 Hornets scheduled to be retired in the 2020s as well as a reconfigured GBAD.