Metros and mass transit are generally the most lucrative target, as we see here, and as we saw in London 10 years ago.
This consisted of a small interview on what I've been doing in Israel, where I am going to, with whom and who packed my stuff. This all was before even entering the actual terminal building.
People interested in killing others will just go for the easiest place, so they will just bomb the line at the scanners entering the terminal.
I talk to a lot of frequent fliers, and almost every one of them has said that there is no point to a terrorist trying to bomb a plane any more. The easiest target for terrorism is simply the insecure portion of an airport. We saw this today in Brussels.
Besides, to defend against suicide bombings, the dogs would have to encounter everyone before they enter the airport checkin area, otherwise the bomber could just detonate once the dog start barking (or whatever they do to mark that they've found something).
You have to stop the issues at their source: why did people who were born and raised in Europe radicalize in just one or two years? And why did the community they lived in not see or report that this was happening?
