Great stuff..Almost reminds me of the old St. Thomas when they had the 4400 foot runway. The old 721s blew out some awesome smoke, before the addition of the smoke bottle conversion. I remember during this transition in the late 60s into the early/mid 70s, airlines would not convert all the engines at the same time and you would see 727s where maybe one engine was converted and two were not. It would make you think that one of the engines was shut down! Early "spotters" like myself were able to identify planes in those days, just by their unique smoke trails.