Obama Did Not call it a Terrorist Attack
He never said it was an terrorist attack.
The closest he came to that was when he said:
"Our country is only as strong as the character of our people and the service of those both civilian and military who represent us around the globe.
No acts of terror will ever shake the resolve of this great nation, alter that character, or eclipse the light of the values that we stand for. Today we mourn four more Americans who represent the very best of the United States of America. We will not waver in our commitment to see that justice is done for this terrible act. And make no mistake, justice will be done."
Throughout the speech, he only called them ‘attackers’.