AMP: 70 Location: US-191 and MT-19, Fergus Cty Reassurance shield immediately after the Montana 19 turn. AMP: 102 Location: US-191 and MT-66, Phillips Cty Several miles later, we’ll approach Montana 66 without much advance warning. Follow 66 north to US-2 and Harlem.  N to S-363, S to S-236  N to US-2  S to US-87/MT-200