def METHOD_NAME(self):
    return (
        latest_faba_of_each_year_queryset()
        .filter(disaster_emergency_fund__in=self.defc)
        .aggregate(
            total=(
                Sum("gross_outlay_amount_by_award_cpe")
                + Sum("ussgl487200_down_adj_pri_ppaid_undel_orders_oblig_refund_cpe")
                + Sum("ussgl497200_down_adj_pri_paid_deliv_orders_oblig_refund_cpe")
            )
        )["total"]
    ) or 0.0