rinse them off in a freshwater wash-down. otherwise, they are going to deteriorate. building and concrete and walkways would deteriorate and that salt air, a lot worse than it would be just in fresh air or freshwater. so, yeah, that doesn't surprise me. although, obviously, this event takes anyone by surprise, by any stretch of the imagination. >> ch -- chad, thank you very much. john, you know, i -- i have to say, it is -- it is, obviously, heartbreaking to see this. we are obviously in the middle of these dramatic search-and-rescue missions. but there's going to be some lessons here, i think, as to exactly what happened here and trying to prevent it in other pl buildings like it. >> absolutely. there's clearly knowledge that there is some kind of risk here because the code in florida is that, after 40 years, a building needs to be checked out, and reengineered for this type of thing. for potential corrosion. for potential risk of being near