Lincoln Labs' use of Twin Otter International's DHC-6s is reasonably well known (see docket somewhere below in this blog).
But if you want to see what the planes are capable of.....
http://www.vistaliner.com/
....will fulfil your wishes.
But if you want to see what the planes are capable of.....
http://www.vistaliner.com/
....will fulfil your wishes.