CH-47 "Chinook"  Just about everything that we used on a FSB could be lifted by this helicopter.  It was also the usual method of troop transport from the Fire Base to the rear-rear in Quon Loi 1969-70.  The Howitzers and the ammo, water and other bulk items were contained with cargo nets and slings.  They were attached to a mechanical hook on the belly, which was operated by a crew member.