Can you guess..

Which emergency vehicle it is?

Tonight I went for a nice wee wander down the river side, again. This time I came across a couple of Photographers at the Discovery ship. They had all the gear, the big suave cameras, tripods and on top of this compact digital cameras on gorilla pods.
These guys were going all out.

I gave one a "All right?" but with no reply I quickly plodded on past the next who was far too intense in getting his angles that I didn't bother with a 'hello'.

After turning round to head back home, I decided to go back the same way because it's the nicest way to walk, along the river with the fresh air and the odd jogger by, but when I was walking back (after about 30 mins of originally passing the Discovery) the guys had moved... wait for it... a whole 10 foot!

It'll be interesting to see if any of the photos they took will end up on this.