Well, INS are always align by the pilot himself, there are few situation where the crew align the INS before the flight, the first case is the "Permanence Opérationnelle" (QRA in english) and the NATO procedure require that the plane have to be in flight in 7 minutes, so he can't wait the alignment. Other cases where the INS are align by crew is by an order of the Squadron Commander, espacially during hard mission, like important training mission or other....
Sorry for my poor english.