Yes, RafEng - I posted a link to a pic in post #67 (couldn't upload the damn thing!) - let's hope that the bad guys don't have access to the Russian equivalent and a decent, sea worthy vessel. The problem I have is in seeing these things touted as 'suitcase bombs / nukes' rather than their existence. Mainly as it implies that they COULD be put in luggage & carried around freely.
I think we can take heart from the fact that, despite many rumours of such devices being unaccounted for, were any in 'the wild', surely the bad men would have used same already.
That Davy Crockett is an interesting, little anachronism, btw. I once nuked my local takeaway at its max useable range (via Nukemap) for stuffing up my order only to discover that I would've shattered all my windows (for pretend, clearly) and bathed myself in lovely, ionising radiation. Truly, a 'duck and cover' weapon!
Best,
Frank