Yemeni soldiers somberly marched in a National Day parade on Tuesday, one day after a suicide bomber killed at least 96 troops and wounded more than 200 during a rehearsal for the parade.

Al-Qaida’s wing in Yemen said Monday’s bomb attack was revenge for what the group called a U.S.-backed war on its followers.

Yemeni President Abed Rabbo Mansour Hadi watched Tuesday from behind a bulletproof glass shield as a smaller parade was moved to the grounds of the air force academy in Sana’a. He made no public comment.