The rules that use the vocabulary item "radars" are:

<i_f_v-pl>

gainful fire control radars

mixed aa fire control radars

mixed air defense fire control radars

mixed anti air fire control radars

swa gainful fire control radars

swa mixed aa fire control radars

swa mixed air defense fire control radars

swa mixed anti air fire control radars

swa sa-6 fire control radars

<specific_vehicle_type-pl>

thaad radars

<i_f_v>

gainful fire control radars

mixed aa fire control radars

mixed air defense fire control radars

mixed anti air fire control radars

swa gainful fire control radars

swa mixed aa fire control radars

swa mixed air defense fire control radars

swa mixed anti air fire control radars

swa sa-6 fire control radars

<specific_vehicle_type-not_creatable-pl>

thaad radars

<specific_vehicle_type-not_creatable>

thaad radars