Additional steps are having a central computer monitor inventory levels, track part request, and order {TAIL ~ replacement parts} when inventory levels fall below {HEAD ~ a preset level} 
Additional steps are having a central computer monitor inventory levels , track part request , and order { TAIL ~ replacement parts } when inventory levels fall below { HEAD ~ a preset level }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD