Parts for military aerospace equipment. The P2G PT invites Expressions of Interest from suppliers for the provision and support of a Mission Support System (MSS) for the Puma HC Mk 2 fleet. The initial capability will consist of procuring a ground based Mission Planning System (MPS) with the future growth potential to provide an on-aircraft Mission Management System (MMS). This equipment is envisaged to be operated at a 'Secret' Level and as such the successful company must be willing to, if not already held, obtain List X Accreditation prior to Contract Award. It is envisaged that a maximum of five suppliers will be invited to tender. A pre-qualification exercise may be held prior to issuing invitations to tender. The Authority seeks to place a Contract for up to 3 years with a further 2 single year options to extend.