The U.S. Commerce Department said on Friday it has opened a national security investigation into the import of commercial ...

Federal investigators have launched a probe after two flights aborted landings at Reagan Washington National Airport on Thursday because a U.S. Army Black Hawk helicopter too close.

US Opens National Security Probe Into Imported Commercial Jets ... leased planes and deferring aircraft deliveries. Delta Air Lines is also unwilling to pay tariffs on aircraft deliveries.

Delta Air Lines is also unwilling to pay tariffs on ... Last month, the department opened a similar probe into the national security impact of imports of medium-duty and heavy-duty trucks and ...