The support urges the ledge or mandible engaging support surface into engagement with {TAIL ~ the mandible} to support {HEAD ~ the head} of person in a suspend position and to concurrently transport the mandible anterior of a persons body to maintain an open airway 
The support urges the ledge or mandible engaging support surface into engagement with { TAIL ~ the mandible } to support { HEAD ~ the head } of person in a suspend position and to concurrently transport the mandible anterior of a persons body to maintain an open airway
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH