As this modernized materiel is fielded to the brigades, the scheme is to equip the units with the highest levels of readiness for deployment with upgraded equipment earliest, while continuing to train the remaining units to attain their full mission capability. Note that expertise, in say psychological operations, is not necessarily confined to the Active Army brigades; if some operation were to require the expertise of a National Guard unit for example, an echelon above brigade might require that a unit with the most modern materiel be formed, to utilize that expertise.