An impact force measurement associated with {TAIL ~ a test} of {HEAD ~ a moveable barrier operator} is obtained 
An impact force measurement associated with { TAIL ~ a test } of { HEAD ~ a moveable barrier operator } is obtained
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH