They're designed for tough conditions. We probably have four or five times as many spares as Sukhoi has. There are three companies in Russia supplying us with Yak spares. They have access to ex-military stores. Prices have been going up steadily, but there is competition.
Some people worry about what's going to happen in Russia, but they're capitalists now.
Everything is standardized. There's no variation, whereas with other engines you might have hundreds of models. In 1999 we sold almost 40 engines. Russian oil systems, fuel systems, instruments, tires they're all the same. We're having new stuff made if we need it.