sentences:  These services connected Boston, Albany, New York and Syracuse, New York with Worcester, Massachusetts, Keene, New Hampshire, Burlington and Rutland in Vermont and the northern New York state cities of Plattsburgh, Saranac Lake, Massena, Ogdensburg and Watertown.Northern Airways' initial fleet consisted of the deHavilland Canada DHC-6 Twin Otter STOL (short take off and landing) commuter turboprop airliner.Following the acquisition of Mohawk Airlines by Allegheny Airlines in April 1972, Air North (the name that Northern Airways then operated under) became an Allegheny Commuter air carrier, operating codeshare services for Allegheny that connected the northern New York cities along with Burlington and Rutland to the larger airports at Syracuse, NY and Albany, NY.