$job->update_statustext('0,generating map') if $job;
my $sectornum = $param->{sectornum};
my $sector = FS::tower_sector->by_key($sectornum)
$job->update_statustext('0,generating map') if $job;
my $sectornum = $param->{sectornum};
my $sector = FS::tower_sector->by_key($sectornum)