Using the nuclear warhead in SEA is out of the question for very obvious reasons, so you'd need an alternative warhead or warheads. There's several possibles: one would be obvious: ordinary HE, perhaps with airburst or contact fuzing. Then there's another possible: WP (White Phosphorous) for either target marking or for burning the NVA out of whatever trenches or bunkers they're in....scares the hell out of everyone I know who's been in combat (I know vets from WW II, Korea, SEA, Gulf I and Gulf II). And in a direct-fire mode, if your firebase or base camp is under attack from VC or NVA infantry, there's a beehive round available, packed with flechettes. All those nails flying will turn a company into a platoon pretty fast....after the first use of these in 105 rounds, dead NVA were found nailed to trees, or had their AKs pinned to their bodies.