A new RallyPoint/Rasmussen Reports national survey of active and retired military personnel finds that only 15% have a favorable opinion of Clinton, with just three percent (3%) who view the former secretary of State Very Favorably. Clinton is seen unfavorably by 81%, including 69% who share a Very Unfavorable impression of her.Emphasis added.
One of the things pollsters sometimes do is subtract the "very" categories to determine something about the strength of the mood for or against someone or something is in their sample. So if a President has a 55% approval rating, but 45% of that is less than "very strong" support and 30% of his opposition is "very strong," you end up saying that there's a 20% intensity of opinion against him even though he is above water overall.
That gives us an intensity index in this case of two-thirds strongly against.