I have taken this question to be relating to the “night enhancement package” (NEP) which was fitted as an urgent operational requirement (UOR) to parts of our Chinook fleet as an aid to pilots in low light levels. Equipments acquired under UOR arrangements are only fitted for the period of the particular military operation for which they were needed, unless a subsequent decision is taken that the requirement is enduring. We are currently reviewing the long term requirement for the NEP.