Top is Department of Defense (USMC) Photo A190200 and
bottom is Department of Defense (USMC) Photo A190197.
Marine engineers with a bulldozer are building ammunition
storage bunkers at Combat Base Area C-4, top. and a Marine platoon from
the 1st Battalion, 4th Marines is seen at work building a bunker emplacement
at C-4 with sandbags for overhead cover in January, bottom.