I agree that the chance of being a terrorist victim are very remote. This will not stop my Camino.
Yes, I expect that air travel will become much more of a hassle. How am I going to deal with that aspect? I will get to all airports extra early, train stations as well. I will go through security as quickly as possible. I am going to go either with checked luggage or shipping some of my stuff to my hotel, where I will meet it.
How am I going to deal with the potential for terrorism striking where I am at on my trip through airports and cities?
I am an old-school, always be prepared kind of outdoors person. My bike kit includes a small first aid kit. The reason is there are bike accidents and car-bike accidents. I may be in one or stumble across one and want to be prepared.
I have recently added to it a new blood clotting bandage because they have an expiration date. I also have a military grade wound bandage in my first aid kit. When my youngest son saw my first aid kit a few years ago, he was amazed and said some of those bandages and stuff are used for gunshot wounds. I said yes. My first aid kit will be part of my carry on baggage. Hopefully, it will not be needed, but it will be available should it.
Most of the self defense and survival courses I have been part of, stress situational awareness. In fact a recent wilderness avalanche course I attended, actually said situational awareness of the group's actions was as or more important than snow conditions. They then showed a statistical analysis of recent avalanche deaths and the principal causes.
Situational awareness means being "actively" aware of your surroundings, being aware of exists and how to get away from trouble should it appear. It also means looking for things that are just "out of the normal" and then thinking about what they could mean as opposed to ignoring them and then looking at them again to find out what is really happening. There is this thing called an OODA loop that is worth thinking about.
Any pilgrim should try to maintain some heightened situational awareness. Will I be caught in a rainstorm between villages, will that slippery downhill stretch of trail or pavement be potentially dangerous to a fall, will this stream be safe to cross, will I need to detour around this blockage in the trail as opposed to scramble over it, will those large farm animals on the trail be a danger? As a pilgrim, I want to open my mind and heart to be more observant, which should help me better experience my Camino. Why should walking through an airport or a town along the Camino cause your brain to shut down?
I am not going to fixate on terrorists as they are a small probability event. For my Camino, I am more worried about car/truck accidents at places where the Way crosses major roads and slippery stretches of trail & road. You don't have to be paranoid to be prepared.
Kind of cheesy, but a quick summary
http://www.artofmanliness.com/2015/02/05/how-to-develop-the-situational-awareness-of-jason-bourne/