Over the past decade the defence supply chain has undergone major changes. Traditional threats have evolved to encompass current counter-terrorism and homeland security issues. This has considerably modified the usage and design constraints of modern defence systems, putting an increased emphasis on early detection and fast response. Combat has shifted to urban guerilla and highly targeted operations, generating a growing need for high survivability and adaptability. Today’s defence companies are required to provide systems, such as drones, that will integrate perfectly into international joint forces’ information networks composed of land, sea and air systems. Finally, increased budgetary constraints mean that projects must be performed faster and more efficiently than ever before.