Marine One and the plane were just over 0.8 mile (1.3 kilometers) apart laterally and about 700 feet (215 meters) apart vertically during the incident

The ongoing White House construction contributed to radio problems that kept air traffic controllers from hearing calls warning that President Donald Trump's helicopter was…

Investigators say air traffic controllers in Washington and the pilots of President Donald Trump’s helicopter met to discuss communication issues one week before a jet and the…