"Cobra-13" is the name of a joint special ops training exercise of 13 NATO members (Croatia, Czech Republic, Estonia, Finland, France, Hungary, Lithuania, The Netherlands, Norway, Poland, Slovakia, United Kingdom and USA) co-organised by the Polish and US Special Forces, taking place in November 2013.
Here are some pictures of the exercises and of past operations or exercises of the participating members:

Click to enlarge!

















!!!More pictures available on the official gallery!!!

Also, here is a short video of Slovakian forces during one of the exercises :
http://www.mosr.sk/30553/elitni-vojaci-cvicili-na-lesti-zasah-v-realnych-podmienkach/?pg=6

Coincidentally, the french police also has a special intervention unit called "Cobra 13", located in Marseille (13 is the département number of Marseille).

Some funny actions in this vid!
https://www.youtube.com/watch?v=Qs2MSW5DhDY

the first pic looks like the CQB map