I traveled through Miami last month and had no problems with computers or any other gear at the security/X-ray station. They recognized it as scuba gear and did a visual inspection, but did not ask me to turn on the computers. With all the international connections through MIA, experienced inspectors are obviously quite accustomed to dive gear. On the other hand, in Hartford (where I started from), they spent considerable time studying the x-ray image of the gear and were greatly relieved when I explained that it was sucba gear.