in a new concept at the time, relatively few ang outfits were mobilized as units. instead, the air force called up packages of equipment and personnel that were developed after the crisis began. mobilizing entire flying units and maintaining their integrity while in federal service, although desirable, would no longer be the only acceptable approach to supporting the air force in a crisis. instead the air national guard would be flexible in its response in order to fit the situation. that could involve individual volunteers, tailored packages of volunteers, or mobilized air national guardsmen developed in response to specific contingencies.