The rules that use the category "<det-sing>" are:

<item>

<det-sing> <item_n-sing>

<det-sing> <item_n-sing> <point_location_mod-gapsout_null-gapsin_null>

<base_of_fire_phrase>

<det-sing> <base_of_fire_nom>

<resupply_command-not_located>

<set_up_verb> <det-sing> service station

<breach_noun_phrase-gapsout_null-gapsin_null>

<det-sing> <breach_type> breach

<attach_detach_part_command>

<attach_detach_part_verb> <det-sing> <attached_part>

<item-not_call_sign>

<det-sing> <item_n-sing>

<det-sing> <item_n-sing> <point_location_mod-gapsout_null-gapsin_null>

<breach_noun_phrase-gapsout_np_gap-gapsin_np_gap>

<det-sing> <breach_type> breach

<target_description>

<det-sing> <target_nom-sing>

<discourse_det-sing>

<det-sing>

<attach_detach_part_command-not_located>

<attach_detach_part_verb> <det-sing> <attached_part>

<resupply_command>

<set_up_verb> <det-sing> service station