The rules that use the vocabulary item "on" are:
zoom closer in on <zoomable_thing>
zoom in closer on <zoomable_thing>
zoom in on <zoomable_thing>
give me suppressive fire on
provide suppressive fire on
suppression fire on
suppressive fire on
on line
center in on <zoomable_thing>
center on <zoomable_thing>
turn on
mount on
on <point_loc>
on
time on target
<get_in_formation_verb> on line
mount on
mount on securing
status report on
mount on securing
go on
concentrate <fire_word> on <engagement_loc>
on command
on my command
on my order
on order