Del Bonita Border Crossing, Montana

This is a lightly traveled crossing, with a new-style US Port of Entry, and some housing for the border officers. It also has an airport, with a grass landing strip directly on the line. Some of these line-straddling airports were used in the early years of World War Two, before the US got involved, officially, but the Canadians had. Aircraft from the US were flown to these line airports, usually at night, where Canadian pilots picked them up, taking them into combat to fight the Germans in Europe. Del Bonita is one of two international crossings on the Blackfeet Indian Reservation, as the boundary traces the reservation’s northern edge, for 50 miles. The International Boundary Commission has no jurisdiction on the reservation, as the treaty with the Blackfeet predates the treaty that established the IBC. The Blackfeet do cooperate with IBC though, and allow them to install monuments on the line.