fire protection unit
протипожежний блок
протипожежний блок
Secretary General’s Close Protection Unit
slant fire; diagonal fire; oblique fire; fire to the oblique
fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')
battery coolant unit / battery-coolant unit (BCU)
gear reduction unit / gear-reduction unit
position and navigation unit / position navigation unit (PNU)