good day dbf,se.19.0:58pm.re:royal observer corps northen Ireland,I have looked at your collection of photo's,showing what to do in the advent of a nuck attack.i must confess,you would not have a chance,4 minutes to take shelter,it could not be done and those in the so called shelters would close the doors,a sad documentary of human nature,first in first served.an interesting post,regards bernard85