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.The Federal ...

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 ...

Two passenger planes were forced into go-arounds at Reagan National Airport as a military helicopter flew an unexpected route, triggering US federal investigations.