Shaftoe picks one man from each color group so that the operation as a whole will not be disrupted. The sun is stunningly powerful here, but in that cavern, with a cool maritime breeze easing through, it’s not really that bad. The sharp smell of petroleum distillates comes off all of those warm painted surfaces. To Bobby Shaftoe, it is a comforting smell, because you never paint stuff when you’re in combat. But the smell also makes him a little tingly, because you frequently paint stuff just before you go into combat.