The real problem was being able to stick it out, to sit in an office under the orders of a wee man in a dark gray suit and look out of the window and recall the bush country, the waving palms, the smell of sweat and cordite, the grunts of men hauling the jeeps over the river crossings, the copper-tasting fears just before the attack, and the wild cruel joy of being alive afterward. To remember, and then to go back to the ledgers and the commuter train, that was what was impossible. He knew he would eat his heart out if it ever came to that. For Africa bites like a tse-tse fly, and once the drug is in the blood it can never be wholly exorcized.