An American, an Englishman and a Japanese man.....

.... were all seeking work on a building site. The foreman looks at them each and says "Ok, you Americans are hard workers, you can mix the cement, you British are good craftsmen, you can lay the bricks and you Japanese are good with logistics, you can be in charge of supplies."
The American and the Englishman set to work, mixing away and laying the bricks until quite an impressive wall has been built, exactly to specification. But soon the bricks, sand and cement powder start to run out and the Japanese guy is nowhere to be seen. Finally the materials are all gone and they have to stop building. They go to see where he has gone. The foreman hasn't seen him, the workshop hasn't seen him, in fact no one else on the building site has seen him since he started working there. They start to get very worried and search the whole site for him, thinking the worst... as they approach a large pile of rubble suddenly the Japanese guy jumps up in to the air smiling and shouts "Supplies"!!!