This is the scene from EP IV when the heros where chased by stormtroopers on death star and escaped through a kind of fan into the detention-area (garbage masher). Han shot a hole into the fan and chewie is afraid of jumping into it, so Han gives him some "helping hand" - eh - "foot".
Is he having fun doing that? Look at his face!
I know it is inaccurate (don`t tell me) - because Luke is missing and Han is standing behind Chewie and not next to him and so on. Come on - it`s just for the fun of it... ;-)
A look from the fan-site...
A look into one side..
I tried to add some laser-shots flying trough the air...
Note that it is a SNOT on a 8x8 baseplate. (there is simply no space for Luke ;->)