Any Idea What They Are Doing

[Nickc]

I have been trying to work out for a while this for a while and I have no idea what is going on.
There are officers and NCOs present, a lot of people are laughing and smiling, so it might be a sort of sports/competition day, but

 

[Lars13]

Hi Nick,
Anything on the reverse?
Looks like an obstacle course to me, not sure what these four guys are doing in those crates (did one of the contestants just emerge at the other end of the crate?) but the next part seems to be crossing a see-saw with a loaded wheel-barrow. I agree with the sports/competition day, behind the lines somewhere.
Regards,
Lars

 

[Nickc]

Hi Nick,
Anything on the reverse?
Looks like an obstacle course to me, not sure what these four guys are doing in those crates (did one of the contestants just emerge at the other end of the crate?) but the next part seems to be crossing a see-saw with a loaded wheel-barrow. I agree with the sports/competition day, behind the lines somewhere.
Regards,
Lars

Hi Lars

Nothing at all on the back