Funny clips! Thanks for sharing.
It seems the second to last launch has been delayed by a few days so they can work on an issue that has arisen. The launch was called off just a few hours before it was to happen.
Anything for safety is the mantra, and I fully agree with that mindset.
Here’s to hoping both of the last two missions go unhampered. The shuttle’s contributions to the ISS has been superb up to this point so let’s let the tradition continue until the last flight.