While business inventories caught Kevin Green's eye, he says the February jobs report was what rattled investors in an already volatile trading environment. He points to a loss in healthcare jobs as a key sign of weakness for what has traditionally been a strong sector. That said, KG expected this month's report to be volatile. Crude oil discussions continue to dominate the commodity space as he explains what beyond Iran is driving prices toward $90. Don't overlook the grains trade — KG says wheat and soybeans can also see wild price swings.