The UK is committed to a series of phased enhancement programmes for Typhoon to increase its overall capability. Under current plans, the in-service dates on Typhoon will be August 2018, for Storm Shadow, and June 2018 for Meteor. Integration trials on both weapons are continuing. The Defensive Aids Sub System (DASS) is an existing part of the UK Typhoon fleet and is subject to continued review and enhancement. Separate development of an Active Electronic Scanned Array radar for Typhoon also continues.