It is known for munition rounds to be packaged in {HEAD ~ canisters} with {TAIL ~ shock absorbing end caps} shaped to resist rolling movement of the canisters 
with
It is known for munition rounds to be packaged in { HEAD ~ canisters } with { TAIL ~ shock absorbing end caps } shaped to resist rolling movement of the canisters
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH