Respuesta :
Answer:
Because in 9/11, airplanes were hacked. They had to upgrade cyber-security and networks so nothing like that happens again.
Explanation:
Answer:
IT WAS THE SADIST DAY EVER IN HISTORY THERE WAS A GLITCH IN THE PLANES THE PLANES CRASHED INTO THE TWIN TOWARDS ALOT OF PEOPLE DIED CAUSE OF THIS
Explanation:
