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