sure; this is a good way of bringing in other sign photographs that are not shield related.

here is a rule for continuity ... all posted photos must obey the math rule, as seen on that website, and furthermore one number from the previous photo must appear in the next one.

the math rule, in short, is you have to take a single sign (in our case, let's extend it to a single gantry if you want, as long as all the signs are facing one direction) and using all the numbers exactly once, write an equation that is correct.

I'll start off with something simple.

9 x 2 = 8 + 10

next poster has to come up with another photo that has at least one 2, 8, 9, or 10, and of course a correct equation. Good good? yes yes.