I use a motorized wheelchair, and I just know, with its battery and wires and motor, that it would be taken apart and inspected by personel who don't know the first thing about wheelchairs. If / when they can't put it together again, I lose all my independence until I can get it fixed or replaced -- wouldn't even be able to go from side of the room to the other without help...
I have greater fear of the secrurity people than I do of the terrorists, frankly.
Which is why I've decided that all my traveling will be over Earth's surface from now on -- at least, that way, I have a reasonable expectation of having my chair in my posession for the whole journey.
... So, do cruise ships still go across the oceans, or are they just for trips along coasts, to the tropical islands?