01固定价格合同复杂开发项目成本上升可能导致不利合同调整。U.S. Securities and Exchange Commission: Northrop Grumman Corporation SEC filings and company facts
02预算时点风险拨款延迟及国防重点变化可能推迟订单和交付。U.S. Securities and Exchange Commission: Northrop Grumman Corporation SEC filings and company facts
03供应约束专业劳动力及零部件短缺可能扰乱生产计划。U.S. Securities and Exchange Commission: Northrop Grumman Corporation SEC filings and company facts