Yeah.
Enjoy. I found it very interesting.
Air Force One Segment -
Part 1 - http://www.youtube.com/watch?v=phBxwFSaIF0
Part 2 - http://www.youtube.com/watch?v=_Hd4d8vb5pk&feature=related
Part 3 - http://www.youtube.com/watch?v=3e5_88MxzbQ&feature=related
Part 4 - http://www.youtube.com/watch?v=G1SFdd0g7xc&feature=related
Part 5 - http://www.youtube.com/watch?v=tbRHpNfrRbI&feature=related
Marine One Segment -
Part 1 - http://www.youtube.com/watch?v=5avBBVG52fc
Part 2 - http://www.youtube.com/watch?v=-cNn55MyvEE&feature=related
Part 3 - http://www.youtube.com/watch?v=uEWIOX8om94&feature=related
Part 4 - http://www.youtube.com/watch?v=57aJfQmhCas&feature=related
Part 5 - http://www.youtube.com/watch?v=5syggF3m_-Q&feature=related
As for the engine…commercial planes probably have them fixed. Not replaced with an entirely new engine. That’s what I’m getting at. I don’t think airlines could afford to swap entire engines for new ones at the first sign of wear (first oil change lol).