The government shutdown will have an immediate impact on the Pentagon, where half the Defense Department's civilian employees—400,000 people—will immediately be furloughed without pay. If the shutdown lasts more than a week, the Marine Corps Times says, paychecks to military personnel due Oct. 15 will be delayed.
But for the nation's biggest defense contractors? It's not a problem right now.
"We will continue to conduct business with a constancy of purpose, a steadfast commitment to our employees and a continuing focus on serving our customers," Lockheed Martin's Jennifer Allen said in a statement to CNBC. "Unless we receive guidance from our customers, our facilities will remain open, and our employees will continue to receive their pay and benefits."