A close call between a Delta Air Lines Airbus A319 taking off from Ronald Reagan Washington National Airport and a US Air Force T-38 jet, often used by the military for training, sounded alarms in the cockpit of the passenger plane Friday.

In January, an American Airlines plane and a military helicopter collided near the same airport, killing more than 60 people.

A Delta flight's close call with military jets near Reagan National has raised eyebrows and questions. Senators demand answers as safety concerns grow.