This is a prospective, multicenter, single arm study evaluating the investigational use of Jetstream Atherectomy (JS) and adjunctive balloon angioplasty (JS +PTA) in the treatment of FP ISR lesions in subjects with claudication or limb ischemia (Rutherford clinical category (RCC) of 2-4) (lesion length ≥ 4 cm). The comparator arm is historic data from plain old balloon angioplasty derived from a Meta-analysis of the 3 published randomized trials in the field.