Senator Ted Cruz, the chairman of the committee with oversight of transportation, said there was no compelling reason for the technology not to have been in use when the helicopter collided with a commercial jet over the Potomac River.

Investigators revealed that the U.S. Army Black Hawk helicopter that collided with American Airlines Flight 5342 was flying about 100 feet higher than it should have been, and also stated the helicopter crew was warned about the incoming jet two times.

After American Airlines Flight 5342 and a U.S. Army helicopter collided mid-air, officials shared insight into the respective pilots’ communication with air traffic control.