Here in southern Maine, I frequently encounter stands of Scotch Pine (Pinus sylvestris). This conifer is native to northern Europe but has been planted throughout New England. Scotch Pine has two short (~2") needles per bundle. Look closely, and you'll notice the needles twist along their length. Red Pine also has two needles per bundle, but they are longer (~5") and straight. Below are some photos of Scotch Pine. For more info, including photos of the tree's distinctive bark, visit the Pinus sylvestris profile at GoBotany.