Trump says air traffic control systems have not been built properly

President Donald Trump said on Thursday that air traffic control systems have not been built properly, speaking in the wake of a deadly midair collision between an American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter near Washington D.C.

"They spent a lot of money renovating a system, spending much more money than they would have spent if they bought a new system for air traffic controllers, meaning the computerized systems. There are certain companies that do a very good job. They didn't use those companies," Trump said.