Adam Penner, president of Harv's Air pilot training school, said the planes are equipped with radios, but it appears the two ...

For more information, U.S. citizens should consult the Federal Aviation Administration," it added. As of Thursday, the State Department issued a Level 4 advisory for the first time since May 14.

The United States Department of State, which usually issues travel warnings to various countries, has also included Canada on the list. On Wednesday, the State Department issued a Level 1 travel ...