Air traffic controllers at Ronald Reagan Washington National Airport again had difficulty communicating by radio with President Donald Trump’s helicopter as it prepared to depart the White House on Thursday, relying on other helicopters in the air to relay messages to Marine One, according to air traffic control audio reviewed by CNN.

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…